iOS keyboard suggests an old email address I'm running iOS 13.4.1 on an iPad Air 2. When I click on an email form field in Safari, the keyboard suggests two email addresses, one labeled "home" and one labeled "email". The "home" address is the address I use for my Apple ID, but the "email" address is an old email address that I haven't used in over ten years. How did iOS find this email address, and how can I get rid of it?

The old email address still forwards to my main email address, so it's possible that iOS extracted it from my mail, but I have other email addresses that forward to my main address that it doesn't suggest. I couldn't find anything in my iCloud account that's linked to the old address, and I didn't own any Apple products ten years ago. Any ideas?
iOS gets your email addresses and other accounts from two places. The first place is your Contact Card in Contacts. The second is from your Accounts and Passwords settings in the Settings app. In your specific case, go to your Contact card and see if the email with the label "email" is there. If so then iOS got it from there. You can also check in Settings under the Accounts and Passwords section. These are the only two places it could have come from (maybe iCloud Keychain but probably not). Hope this helps!