diff --git a/backend/migrations/1787400000000_split-customer-name.js b/backend/migrations/1787400000000_split-customer-name.js
new file mode 100644
index 0000000..05e6f6e
--- /dev/null
+++ b/backend/migrations/1787400000000_split-customer-name.js
@@ -0,0 +1,62 @@
+exports.up = (pgm) => {
+  pgm.sql(`
+    -- Emails greet customers, and a single 'name' column only allows the formal
+    -- whole name: "Hi Thom Lamb," rather than "Hi Thom,". Splitting it is what
+    -- makes an informal greeting possible.
+    --
+    -- Both columns are nullable even though registration now requires them. The
+    -- requirement is enforced in the route, where a missing field can produce a
+    -- 400 naming it. Marking these NOT NULL would mean backfilling legacy rows
+    -- with empty strings, which asserts that every customer has a name — and
+    -- that is not true of anyone who registered while the field was optional.
+    -- The table should record what is actually the case.
+    ALTER TABLE customers ADD COLUMN IF NOT EXISTS first_name TEXT;
+    ALTER TABLE customers ADD COLUMN IF NOT EXISTS last_name TEXT;
+
+    -- The lossy part, and there is no version of this that is not.
+    --
+    -- Splitting on the first space is right for "Thom Lamb" and wrong for
+    -- "Mary Jane Smith", who ends up with a last name of "Jane Smith". Names do
+    -- not reliably divide into two parts at all. This was chosen over leaving
+    -- the columns empty because there is currently no way for a customer to
+    -- correct their own name — PUT /api/customers/me exists but nothing calls
+    -- it — so empty would mean permanently unpersonalised for everyone who
+    -- registered before this.
+    --
+    -- Treat backfilled values as a best guess rather than as data the customer
+    -- gave you in this shape.
+    UPDATE customers
+    SET first_name = CASE
+          WHEN position(' ' in btrim(name)) > 0 THEN split_part(btrim(name), ' ', 1)
+          ELSE btrim(name)
+        END,
+        last_name = CASE
+          WHEN position(' ' in btrim(name)) > 0
+            THEN btrim(substring(btrim(name) from position(' ' in btrim(name)) + 1))
+          ELSE NULL
+        END
+    WHERE name IS NOT NULL AND btrim(name) <> '';
+
+    -- Dropped rather than kept alongside. Two columns describing the same fact
+    -- drift, and the new pair is now the only place a name lives.
+    ALTER TABLE customers DROP COLUMN IF EXISTS name;
+  `);
+};
+
+exports.down = (pgm) => {
+  pgm.sql(`
+    ALTER TABLE customers ADD COLUMN IF NOT EXISTS name TEXT;
+
+    -- Rejoins the parts. Not a perfect inverse of the split above — a name that
+    -- was mangled on the way in stays mangled on the way out — but it restores
+    -- a usable whole name rather than leaving the column empty.
+    UPDATE customers
+    SET name = btrim(concat_ws(' ', first_name, last_name))
+    WHERE first_name IS NOT NULL OR last_name IS NOT NULL;
+
+    UPDATE customers SET name = NULL WHERE name = '';
+
+    ALTER TABLE customers DROP COLUMN IF EXISTS first_name;
+    ALTER TABLE customers DROP COLUMN IF EXISTS last_name;
+  `);
+};
diff --git a/backend/src/routes/adminCustomers.ts b/backend/src/routes/adminCustomers.ts
index 81753da..e2f19e3 100755
--- a/backend/src/routes/adminCustomers.ts
+++ b/backend/src/routes/adminCustomers.ts
@@ -7,7 +7,8 @@ const router = Router();
 router.get('/', asyncRoute(async (_req: Request, res: Response) => {
   const { rows } = await pool.query(`
     SELECT
-      c.id, c.email, c.name, c.email_verified, c.marketing_consent, c.created_at, c.disabled_at,
+      c.id, c.email, nullif(btrim(concat_ws(' ', c.first_name, c.last_name)), '') AS name,
+      c.email_verified, c.marketing_consent, c.created_at, c.disabled_at,
       COUNT(o.id) FILTER (WHERE o.status = 'completed') AS order_count,
       COALESCE(SUM(o.amount_cents) FILTER (WHERE o.status = 'completed'), 0) AS total_spent_cents,
       MAX(o.created_at) AS last_order_at,
@@ -141,7 +142,8 @@ router.post('/:id/reserved/:itemId/release', asyncRoute(async (req: Request, res
 
 router.get('/:id', asyncRoute(async (req: Request, res: Response) => {
   const { rows: customerRows } = await pool.query(
-    `SELECT id, email, name, email_verified, marketing_consent, marketing_consent_at, created_at
+    `SELECT id, email, nullif(btrim(concat_ws(' ', first_name, last_name)), '') AS name,
+            email_verified, marketing_consent, marketing_consent_at, created_at
      FROM customers WHERE id = $1`,
     [req.params.id]
   );
diff --git a/backend/src/routes/customers.ts b/backend/src/routes/customers.ts
index eae43c9..444ddce 100755
--- a/backend/src/routes/customers.ts
+++ b/backend/src/routes/customers.ts
@@ -39,7 +39,11 @@ async function createSession(customerId: number): Promise<string> {
 interface CustomerRow {
   id: number;
   email: string;
-  name: string | null;
+  // Nullable despite registration requiring both, because customers who
+  // registered while the field was optional genuinely have no name. The
+  // requirement is enforced at registration, not asserted by the schema.
+  first_name: string | null;
+  last_name: string | null;
   email_verified: boolean;
   marketing_consent: boolean;
   favorite_alerts: boolean;
@@ -50,7 +54,8 @@ function publicCustomer(c: CustomerRow) {
   return {
     id: c.id,
     email: c.email,
-    name: c.name,
+    first_name: c.first_name,
+    last_name: c.last_name,
     email_verified: c.email_verified,
     marketing_consent: c.marketing_consent,
     favorite_alerts: c.favorite_alerts,
@@ -59,10 +64,20 @@ function publicCustomer(c: CustomerRow) {
 }
 
 router.post('/register', asyncRoute(async (req: Request, res: Response) => {
-  const { email, password, name, marketingConsent } = req.body;
+  const { email, password, firstName, lastName, marketingConsent } = req.body;
   if (!email || !isValidEmail(String(email)) || !password || String(password).length < 8) {
     return res.status(400).json({ error: 'valid email and password (min 8 chars) required' });
   }
+  // Named individually rather than as one "name is required", so a form that
+  // filled one field and not the other is told which.
+  const first = String(firstName ?? '').trim();
+  const last = String(lastName ?? '').trim();
+  if (!first) {
+    return res.status(400).json({ error: 'first name is required' });
+  }
+  if (!last) {
+    return res.status(400).json({ error: 'last name is required' });
+  }
   const normalizedEmail = String(email).toLowerCase().trim();
   const { rows: existing } = await pool.query(`SELECT id FROM customers WHERE email = $1`, [normalizedEmail]);
   if (existing.length) return res.status(409).json({ error: 'an account with this email already exists' });
@@ -72,10 +87,10 @@ router.post('/register', asyncRoute(async (req: Request, res: Response) => {
   const consent = !!marketingConsent;
 
   const { rows } = await pool.query(
-    `INSERT INTO customers (email, password_hash, name, marketing_consent, marketing_consent_at, marketing_consent_text, unsubscribe_token)
-     VALUES ($1, $2, $3, $4, $5, $6, $7) RETURNING *`,
+    `INSERT INTO customers (email, password_hash, first_name, last_name, marketing_consent, marketing_consent_at, marketing_consent_text, unsubscribe_token)
+     VALUES ($1, $2, $3, $4, $5, $6, $7, $8) RETURNING *`,
     [
-      normalizedEmail, passwordHash, name || null,
+      normalizedEmail, passwordHash, first, last,
       consent, consent ? new Date() : null, consent ? MARKETING_CONSENT_TEXT : null,
       unsubscribeToken
     ]
@@ -285,11 +300,14 @@ router.get('/me', requireCustomer, asyncRoute(async (req: Request, res: Response
   res.json(publicCustomer(rows[0]));
 }));
 
+// Kept in step with registration for consistency. Note nothing in the frontend
+// calls this today — the account page has no name editing — so this is API
+// surface without a caller rather than a path in use.
 router.put('/me', requireCustomer, asyncRoute(async (req: Request, res: Response) => {
-  const { name } = req.body;
+  const { firstName, lastName } = req.body;
   const { rows } = await pool.query(
-    `UPDATE customers SET name = $1 WHERE id = $2 RETURNING *`,
-    [name || null, req.customerId]
+    `UPDATE customers SET first_name = $1, last_name = $2 WHERE id = $3 RETURNING *`,
+    [String(firstName ?? '').trim() || null, String(lastName ?? '').trim() || null, req.customerId]
   );
   res.json(publicCustomer(rows[0]));
 }));
diff --git a/backend/src/server.ts b/backend/src/server.ts
index e8f8e9c..d04004e 100755
--- a/backend/src/server.ts
+++ b/backend/src/server.ts
@@ -23,7 +23,7 @@ async function sweepExpiredCarts(): Promise<void> {
 async function sendCartReminders(): Promise<void> {
   try {
     const { rows } = await pool.query(`
-      SELECT c.email, c.name, i.name AS item_name, ci.expires_at, ci.id AS cart_item_id
+      SELECT c.email, c.first_name, i.name AS item_name, ci.expires_at, ci.id AS cart_item_id
       FROM cart_items ci
       JOIN carts ca ON ca.id = ci.cart_id
       JOIN customers c ON c.id = ca.customer_id
@@ -33,9 +33,9 @@ async function sendCartReminders(): Promise<void> {
         AND ci.expires_at > now()
     `);
 
-    const byEmail = new Map<string, { name: string | null; items: { name: string; expiresAt: Date; cartItemId: number }[] }>();
+    const byEmail = new Map<string, { firstName: string | null; items: { name: string; expiresAt: Date; cartItemId: number }[] }>();
     for (const row of rows) {
-      if (!byEmail.has(row.email)) byEmail.set(row.email, { name: row.name, items: [] });
+      if (!byEmail.has(row.email)) byEmail.set(row.email, { firstName: row.first_name, items: [] });
       byEmail.get(row.email)!.items.push({ name: row.item_name, expiresAt: row.expires_at, cartItemId: row.cart_item_id });
     }
 
@@ -44,7 +44,7 @@ async function sendCartReminders(): Promise<void> {
       await sendMail(
         email,
         'Items waiting in your cart',
-        `<p>Hi${data.name ? ' ' + data.name : ''},</p>
+        `<p>Hi${data.firstName ? ' ' + data.firstName : ''},</p>
          <p>You still have items in your cart at Redefined Designs:</p>
          <ul>${itemList}</ul>
          <p><a href="${process.env.PUBLIC_URL}/cart">View your cart</a> before your reservation expires.</p>`
diff --git a/backend/tests/integration/adminInventory.integration.test.ts b/backend/tests/integration/adminInventory.integration.test.ts
index 030a36b..a9238fa 100644
--- a/backend/tests/integration/adminInventory.integration.test.ts
+++ b/backend/tests/integration/adminInventory.integration.test.ts
@@ -42,7 +42,7 @@ async function createItem(
 
 async function registerCustomer(email: string) {
   const agent = request.agent(app);
-  await agent.post('/api/customers/register').send({ email, password: 'supersecret123' });
+  await agent.post('/api/customers/register').send({ firstName: 'Test', lastName: 'Customer', email, password: 'supersecret123' });
   const { rows } = await pool.query(`SELECT id FROM customers WHERE email = $1`, [email]);
   return { agent, id: rows[0].id as number };
 }
diff --git a/backend/tests/integration/cart.integration.test.ts b/backend/tests/integration/cart.integration.test.ts
index d591be1..57ad95e 100644
--- a/backend/tests/integration/cart.integration.test.ts
+++ b/backend/tests/integration/cart.integration.test.ts
@@ -14,7 +14,7 @@ afterAll(async () => {
 
 async function registerAndGetAgent(email: string) {
   const agent = request.agent(app);
-  await agent.post('/api/customers/register').send({ email, password: 'supersecret123' });
+  await agent.post('/api/customers/register').send({ firstName: 'Test', lastName: 'Customer', email, password: 'supersecret123' });
   return agent;
 }
 
diff --git a/backend/tests/integration/customers.integration.test.ts b/backend/tests/integration/customers.integration.test.ts
index 5c4c13e..c0e2b5b 100755
--- a/backend/tests/integration/customers.integration.test.ts
+++ b/backend/tests/integration/customers.integration.test.ts
@@ -13,11 +13,83 @@ afterAll(async () => {
 });
 
 describe('POST /api/customers/register', () => {
-  it('creates an account with marketing consent unchecked by default', async () => {
+  // Both names are required from anyone new, so the greeting in every email has
+  // something to use. Refused individually rather than as one "name required",
+  // so a form that filled one and not the other is told which. See #106.
+  it('refuses a registration with no first name', async () => {
     const res = await request(app).post('/api/customers/register').send({
-      email: 'jane@example.com',
+      email: 'nofirst@example.com',
       password: 'supersecret123',
-      name: 'Jane'
+      lastName: 'Customer'
+    });
+
+    expect(res.status).toBe(400);
+    expect(res.body.error).toBe('first name is required');
+  });
+
+  it('refuses a registration with no last name', async () => {
+    const res = await request(app).post('/api/customers/register').send({
+      email: 'nolast@example.com',
+      password: 'supersecret123',
+      firstName: 'Test'
+    });
+
+    expect(res.status).toBe(400);
+    expect(res.body.error).toBe('last name is required');
+  });
+
+  it('refuses names that are only whitespace', async () => {
+    const res = await request(app).post('/api/customers/register').send({
+      email: 'blank@example.com',
+      password: 'supersecret123',
+      firstName: '   ',
+      lastName: 'Customer'
+    });
+
+    expect(res.status).toBe(400);
+    expect(res.body.error).toBe('first name is required');
+  });
+
+  it('stores both names, trimmed, and returns them', async () => {
+    const res = await request(app).post('/api/customers/register').send({
+      email: 'named@example.com',
+      password: 'supersecret123',
+      firstName: '  Thom  ',
+      lastName: '  Lamb  '
+    });
+
+    expect(res.status).toBe(200);
+    expect(res.body.first_name).toBe('Thom');
+    expect(res.body.last_name).toBe('Lamb');
+
+    const { rows } = await pool.query(
+      `SELECT first_name, last_name FROM customers WHERE email = $1`,
+      ['named@example.com']
+    );
+    expect(rows[0]).toEqual({ first_name: 'Thom', last_name: 'Lamb' });
+  });
+
+  // The account is the customer's own, but the shape returned to them should
+  // not quietly grow — a password hash or a token appearing here is the kind of
+  // thing that goes unnoticed.
+  it('does not return anything beyond the public customer shape', async () => {
+    const res = await request(app).post('/api/customers/register').send({
+      email: 'shape@example.com',
+      password: 'supersecret123',
+      firstName: 'Test',
+      lastName: 'Customer'
+    });
+
+    expect(Object.keys(res.body).sort()).toEqual([
+      'created_at', 'email', 'email_verified', 'favorite_alerts',
+      'first_name', 'id', 'last_name', 'marketing_consent'
+    ]);
+  });
+
+  it('creates an account with marketing consent unchecked by default', async () => {
+    const res = await request(app).post('/api/customers/register').send({ firstName: 'Test', lastName: 'Customer',
+      email: 'jane@example.com',
+      password: 'supersecret123'
     });
     expect(res.status).toBe(200);
     expect(res.body.email).toBe('jane@example.com');
@@ -26,7 +98,7 @@ describe('POST /api/customers/register', () => {
   });
 
   it('respects an explicit marketing opt-in', async () => {
-    const res = await request(app).post('/api/customers/register').send({
+    const res = await request(app).post('/api/customers/register').send({ firstName: 'Test', lastName: 'Customer',
       email: 'opt-in@example.com',
       password: 'supersecret123',
       marketingConsent: true
@@ -35,11 +107,11 @@ describe('POST /api/customers/register', () => {
   });
 
   it('rejects a duplicate email', async () => {
-    await request(app).post('/api/customers/register').send({
+    await request(app).post('/api/customers/register').send({ firstName: 'Test', lastName: 'Customer',
       email: 'dupe@example.com',
       password: 'supersecret123'
     });
-    const res = await request(app).post('/api/customers/register').send({
+    const res = await request(app).post('/api/customers/register').send({ firstName: 'Test', lastName: 'Customer',
       email: 'dupe@example.com',
       password: 'anotherpassword'
     });
@@ -47,7 +119,7 @@ describe('POST /api/customers/register', () => {
   });
 
   it('rejects a password under 8 characters', async () => {
-    const res = await request(app).post('/api/customers/register').send({
+    const res = await request(app).post('/api/customers/register').send({ firstName: 'Test', lastName: 'Customer',
       email: 'short@example.com',
       password: '123'
     });
@@ -55,7 +127,7 @@ describe('POST /api/customers/register', () => {
   });
 
   it('rejects a malformed email', async () => {
-    const res = await request(app).post('/api/customers/register').send({
+    const res = await request(app).post('/api/customers/register').send({ firstName: 'Test', lastName: 'Customer',
       email: 'not-an-email',
       password: 'supersecret123'
     });
@@ -66,7 +138,7 @@ describe('POST /api/customers/register', () => {
 describe('session-gated routes', () => {
   it('logs in and can access /me with the returned session cookie', async () => {
     const agent = request.agent(app);
-    await agent.post('/api/customers/register').send({
+    await agent.post('/api/customers/register').send({ firstName: 'Test', lastName: 'Customer',
       email: 'login-test@example.com',
       password: 'supersecret123'
     });
@@ -81,7 +153,7 @@ describe('session-gated routes', () => {
   });
 
   it('rejects login with the wrong password', async () => {
-    await request(app).post('/api/customers/register').send({
+    await request(app).post('/api/customers/register').send({ firstName: 'Test', lastName: 'Customer',
       email: 'wrongpass@example.com',
       password: 'supersecret123'
     });
diff --git a/backend/tests/integration/disableCustomer.integration.test.ts b/backend/tests/integration/disableCustomer.integration.test.ts
index e4582b3..1174944 100644
--- a/backend/tests/integration/disableCustomer.integration.test.ts
+++ b/backend/tests/integration/disableCustomer.integration.test.ts
@@ -16,7 +16,7 @@ const PASSWORD = 'supersecret123';
 
 async function register(email: string) {
   const agent = request.agent(app);
-  const res = await agent.post('/api/customers/register').send({ email, password: PASSWORD });
+  const res = await agent.post('/api/customers/register').send({ firstName: 'Test', lastName: 'Customer', email, password: PASSWORD });
   expect(res.status).toBe(200);
   const { rows } = await pool.query(`SELECT id FROM customers WHERE email = $1`, [email]);
   return { agent, id: rows[0].id as number };
@@ -160,7 +160,7 @@ describe('disabling a customer', () => {
     // Otherwise disabling is trivially undone by signing up again.
     const res = await request(app)
       .post('/api/customers/register')
-      .send({ email: 'reregister@example.com', password: PASSWORD });
+      .send({ firstName: 'Test', lastName: 'Customer', email: 'reregister@example.com', password: PASSWORD });
     expect(res.status).toBe(409);
   });
 });
diff --git a/backend/tests/integration/favorites.integration.test.ts b/backend/tests/integration/favorites.integration.test.ts
index 3dab2d6..24e3b56 100644
--- a/backend/tests/integration/favorites.integration.test.ts
+++ b/backend/tests/integration/favorites.integration.test.ts
@@ -23,7 +23,7 @@ const PASSWORD = 'supersecret123';
 
 async function register(email: string) {
   const agent = request.agent(app);
-  expect((await agent.post('/api/customers/register').send({ email, password: PASSWORD })).status).toBe(200);
+  expect((await agent.post('/api/customers/register').send({ firstName: 'Test', lastName: 'Customer', email, password: PASSWORD })).status).toBe(200);
   const { rows } = await pool.query(`SELECT id FROM customers WHERE email = $1`, [email]);
   return { agent, id: rows[0].id as number };
 }
diff --git a/backend/tests/integration/passwordReset.integration.test.ts b/backend/tests/integration/passwordReset.integration.test.ts
index 9d6a1b4..20792ef 100644
--- a/backend/tests/integration/passwordReset.integration.test.ts
+++ b/backend/tests/integration/passwordReset.integration.test.ts
@@ -16,7 +16,7 @@ const PASSWORD = 'supersecret123';
 
 async function register(email: string) {
   const agent = request.agent(app);
-  const res = await agent.post('/api/customers/register').send({ email, password: PASSWORD });
+  const res = await agent.post('/api/customers/register').send({ firstName: 'Test', lastName: 'Customer', email, password: PASSWORD });
   expect(res.status).toBe(200);
   return agent;
 }
diff --git a/frontend/src/customer/AuthForm.tsx b/frontend/src/customer/AuthForm.tsx
index 34bab4f..7eef1cc 100644
--- a/frontend/src/customer/AuthForm.tsx
+++ b/frontend/src/customer/AuthForm.tsx
@@ -76,12 +76,23 @@ export default function AuthForm({ mode, onModeChange, onForgotPassword, onSucce
                 layout="vertical"
                 onFinish={(values) =>
                   submit(() =>
-                    registerCustomer(values.email, values.password, values.name, !!values.marketingConsent)
+                    registerCustomer(values.email, values.password, values.firstName, values.lastName, !!values.marketingConsent)
                   )
                 }
               >
-                <Form.Item name="name" label="Name">
-                  <Input autoComplete="name" />
+                <Form.Item
+                  name="firstName"
+                  label="First name"
+                  rules={[{ required: true, message: 'First name is required' }]}
+                >
+                  <Input autoComplete="given-name" />
+                </Form.Item>
+                <Form.Item
+                  name="lastName"
+                  label="Last name"
+                  rules={[{ required: true, message: 'Last name is required' }]}
+                >
+                  <Input autoComplete="family-name" />
                 </Form.Item>
                 <Form.Item name="email" label="Email" rules={[{ required: true, type: 'email' }]}>
                   <Input autoComplete="email" />
diff --git a/frontend/src/customer/customerApi.ts b/frontend/src/customer/customerApi.ts
index db6d535..ab0a6d9 100755
--- a/frontend/src/customer/customerApi.ts
+++ b/frontend/src/customer/customerApi.ts
@@ -1,7 +1,10 @@
 export interface Customer {
   id: number;
   email: string;
-  name: string | null;
+  // Nullable because customers who registered before these were required have
+  // neither. Registration demands both from anyone new.
+  first_name: string | null;
+  last_name: string | null;
   email_verified: boolean;
   marketing_consent: boolean;
   favorite_alerts: boolean;
@@ -25,11 +28,17 @@ async function handle<T>(res: Response): Promise<T> {
   return res.json();
 }
 
-export function registerCustomer(email: string, password: string, name: string, marketingConsent: boolean): Promise<Customer> {
+export function registerCustomer(
+  email: string,
+  password: string,
+  firstName: string,
+  lastName: string,
+  marketingConsent: boolean
+): Promise<Customer> {
   return fetch('/api/customers/register', {
     method: 'POST',
     headers: { 'Content-Type': 'application/json' },
-    body: JSON.stringify({ email, password, name, marketingConsent })
+    body: JSON.stringify({ email, password, firstName, lastName, marketingConsent })
   }).then(res => handle<Customer>(res));
 }
 
diff --git a/frontend/tests/e2e/account-modal.spec.ts b/frontend/tests/e2e/account-modal.spec.ts
index fbf35de..f490bb5 100644
--- a/frontend/tests/e2e/account-modal.spec.ts
+++ b/frontend/tests/e2e/account-modal.spec.ts
@@ -14,6 +14,8 @@ async function registerCustomer(page: Page): Promise<string> {
   const email = uniqueEmail();
   await page.goto('/register');
   await page.getByRole('textbox', { name: 'Email' }).fill(email);
+  await page.getByRole('textbox', { name: 'First name' }).fill('Test');
+  await page.getByRole('textbox', { name: 'Last name' }).fill('Customer');
   await page.getByLabel('Password').fill(PASSWORD);
   await page.getByRole('button', { name: 'Create account' }).click();
   await expect(page.getByRole('button', { name: 'My Account' })).toBeVisible({ timeout: 20000 });
diff --git a/frontend/tests/e2e/admin-disable-customer.spec.ts b/frontend/tests/e2e/admin-disable-customer.spec.ts
index 09b2378..6d0748a 100644
--- a/frontend/tests/e2e/admin-disable-customer.spec.ts
+++ b/frontend/tests/e2e/admin-disable-customer.spec.ts
@@ -6,6 +6,8 @@ const uniqueEmail = () => `disable-${Date.now().toString(36)}${Math.random().toS
 async function register(page: Page, email: string) {
   await page.goto('/register');
   await page.getByRole('textbox', { name: 'Email' }).fill(email);
+  await page.getByRole('textbox', { name: 'First name' }).fill('Test');
+  await page.getByRole('textbox', { name: 'Last name' }).fill('Customer');
   await page.getByLabel('Password').fill(PASSWORD);
   await page.getByRole('button', { name: 'Create account' }).click();
   // Registering now closes the auth modal and returns to the page behind it, so
diff --git a/frontend/tests/e2e/admin-reserved-items.spec.ts b/frontend/tests/e2e/admin-reserved-items.spec.ts
index 0eee153..d5c6f77 100644
--- a/frontend/tests/e2e/admin-reserved-items.spec.ts
+++ b/frontend/tests/e2e/admin-reserved-items.spec.ts
@@ -17,6 +17,8 @@ async function reserveItem(page: import('@playwright/test').Page, itemName: stri
 
   await page.goto('/register');
   await page.getByRole('textbox', { name: 'Email' }).fill(email);
+  await page.getByRole('textbox', { name: 'First name' }).fill('Test');
+  await page.getByRole('textbox', { name: 'Last name' }).fill('Customer');
   await page.getByLabel('Password').fill('supersecret123');
   await page.getByRole('button', { name: 'Create account' }).click();
   await expect(page.getByRole('button', { name: 'My Account' })).toBeVisible({ timeout: 20000 });
@@ -83,6 +85,8 @@ test.describe('Admin reserved items', () => {
     const email = `idle-${suffix()}@example.com`;
     await page.goto('/register');
     await page.getByRole('textbox', { name: 'Email' }).fill(email);
+    await page.getByRole('textbox', { name: 'First name' }).fill('Test');
+    await page.getByRole('textbox', { name: 'Last name' }).fill('Customer');
     await page.getByLabel('Password').fill('supersecret123');
     await page.getByRole('button', { name: 'Create account' }).click();
     await expect(page.getByRole('button', { name: 'My Account' })).toBeVisible({ timeout: 20000 });
diff --git a/frontend/tests/e2e/auth.spec.ts b/frontend/tests/e2e/auth.spec.ts
index 5f887ff..3beb5e4 100755
--- a/frontend/tests/e2e/auth.spec.ts
+++ b/frontend/tests/e2e/auth.spec.ts
@@ -15,6 +15,8 @@ function uniqueEmail(): string {
 async function register(page: Page, email: string) {
   await page.goto('/register');
   await page.getByRole('textbox', { name: 'Email' }).fill(email);
+  await page.getByRole('textbox', { name: 'First name' }).fill('Test');
+  await page.getByRole('textbox', { name: 'Last name' }).fill('Customer');
   await page.getByLabel('Password').fill(PASSWORD);
   await page.getByRole('button', { name: 'Create account' }).click();
   await expect(page.getByRole('button', { name: 'My Account' })).toBeVisible({ timeout: 20000 });
@@ -27,6 +29,21 @@ async function openAccount(page: Page) {
 }
 
 test.describe('Customer accounts', () => {
+  // Both names are required from anyone new so every email has a first name to
+  // greet with (#106). The server refuses without them; this is the form
+  // refusing first, so nobody gets a round trip to find out.
+  test('will not submit a registration without both names', async ({ page }) => {
+    await page.goto('/register');
+    await page.getByRole('textbox', { name: 'Email' }).fill(uniqueEmail());
+    await page.getByLabel('Password').fill(PASSWORD);
+    await page.getByRole('button', { name: 'Create account' }).click();
+
+    await expect(page.getByText('First name is required')).toBeVisible();
+    await expect(page.getByText('Last name is required')).toBeVisible();
+    // Still on the form rather than signed in.
+    await expect(page.getByRole('button', { name: 'My Account' })).toHaveCount(0);
+  });
+
   test('marketing consent checkbox is unchecked by default', async ({ page }) => {
     await page.goto('/register');
     await expect(page.getByRole('checkbox')).not.toBeChecked();
diff --git a/frontend/tests/e2e/favorites-filter.spec.ts b/frontend/tests/e2e/favorites-filter.spec.ts
index f4e1678..b85d7ec 100644
--- a/frontend/tests/e2e/favorites-filter.spec.ts
+++ b/frontend/tests/e2e/favorites-filter.spec.ts
@@ -30,6 +30,8 @@ test.beforeAll(async ({ playwright }) => {
 async function register(page: Page) {
   await page.goto('/register');
   await page.getByRole('textbox', { name: 'Email' }).fill(uniqueEmail());
+  await page.getByRole('textbox', { name: 'First name' }).fill('Test');
+  await page.getByRole('textbox', { name: 'Last name' }).fill('Customer');
   await page.getByLabel('Password').fill(PASSWORD);
   await page.getByRole('button', { name: 'Create account' }).click();
   // Registering now closes the auth modal and returns to the page behind it, so
@@ -134,6 +136,8 @@ test.describe('Filtering the storefront by favorites', () => {
     await expect(prompt).toBeVisible();
 
     await prompt.getByRole('textbox', { name: 'Email' }).fill(uniqueEmail());
+    await page.getByRole('textbox', { name: 'First name' }).fill('Test');
+    await page.getByRole('textbox', { name: 'Last name' }).fill('Customer');
     await prompt.getByLabel('Password').fill(PASSWORD);
     await prompt.getByRole('button', { name: 'Create account' }).click();
 
diff --git a/frontend/tests/e2e/favorites.spec.ts b/frontend/tests/e2e/favorites.spec.ts
index c553def..8c5f429 100644
--- a/frontend/tests/e2e/favorites.spec.ts
+++ b/frontend/tests/e2e/favorites.spec.ts
@@ -20,6 +20,8 @@ test.beforeAll(async ({ playwright }) => {
 async function register(page: Page, email: string) {
   await page.goto('/register');
   await page.getByRole('textbox', { name: 'Email' }).fill(email);
+  await page.getByRole('textbox', { name: 'First name' }).fill('Test');
+  await page.getByRole('textbox', { name: 'Last name' }).fill('Customer');
   await page.getByLabel('Password').fill(PASSWORD);
   await page.getByRole('button', { name: 'Create account' }).click();
   // Registering now closes the auth modal and returns to the page behind it, so
@@ -52,6 +54,8 @@ test.describe('Favoriting items', () => {
 
     const email = uniqueEmail();
     await page.getByRole('dialog').getByRole('textbox', { name: 'Email' }).fill(email);
+    await page.getByRole('textbox', { name: 'First name' }).fill('Test');
+    await page.getByRole('textbox', { name: 'Last name' }).fill('Customer');
     await page.getByRole('dialog').getByLabel('Password').fill(PASSWORD);
     await page.getByRole('dialog').getByRole('button', { name: 'Create account' }).click();
 
diff --git a/frontend/tests/e2e/password-reset.spec.ts b/frontend/tests/e2e/password-reset.spec.ts
index 4230411..ada1d2c 100644
--- a/frontend/tests/e2e/password-reset.spec.ts
+++ b/frontend/tests/e2e/password-reset.spec.ts
@@ -9,6 +9,8 @@ const uniqueEmail = () => `reset-${Date.now().toString(36)}${Math.random().toStr
 async function register(page: Page, email: string) {
   await page.goto('/register');
   await page.getByRole('textbox', { name: 'Email' }).fill(email);
+  await page.getByRole('textbox', { name: 'First name' }).fill('Test');
+  await page.getByRole('textbox', { name: 'Last name' }).fill('Customer');
   await page.getByLabel('Password').fill(PASSWORD);
   await page.getByRole('button', { name: 'Create account' }).click();
   // Registering now closes the auth modal and returns to the page behind it, so