How to remove unwanted email from autofill on iPhone 4s?

I entered an email once and it comes up every time when I type in one letter. The email is not in any of my contacts so there's no removing it there. And autofill is set to off. Any suggestions or am I stuck with it that way?

Yea, I have just discovered the answer on this - go to settings, mail contacts calendar, select the email account that is causing the problem and then select the Account on the top of the screen. It will show the account information and you'll see a "Name" associated with the email address. Change it to whatever you like.