Have you tried logging into that email address? If it is an email you haven’t used in a long time, Google is supposed to be purging it anyways. They just made an announcement on that…pictures, accounts, etc that you haven’t logged into for something like 2 year are going to be removed.
@Dutchess_III If they’re attaching the address, you know what the address is. Go to the log on page, and put your email address and then put “forgot password” and follow the instructions to reset the password. Then you’ll have the email address and a reset password, and you can log on.