Name Change
After changing my name due to marriage, I updated this in my iCloud account too.
However when I send emails from my iCloud these still send from my maiden name. How can I change this?
iPhone 11, iOS 13
You’ll have to do this from https://applied.apple.com.
How do I change my Apple ID Name or personal information?
You can change your Apple ID Name at My Apple ID. Click on Manage your Apple ID and sign in with your Apple ID name and password. Click Edit and enter the new information, then click Save Changes. Changes take effect immediately. You can also use My Apple ID to change your personal information, such as your mailing address or email address. See Changing the name you use for your Apple ID if you'd like more information.