Someone else's e-mail - iPhone6

Hi all - I got a new iPhone 6 one week ago and put everything back on with my apple ID/iCloud. At least once a day it prompts me for an apple login pre-filled with a friend's gmail address that I haven't spoken to in years. I keep hitting cancel or clear it and login as myself. Everywhere I have checked the correct e-mail address (mine) is associated with the phone and my iCloud.

How can I get this to stop?

Thank you -

Liz.