Did I understand you right, that you just found an e-mail that said that was your username at some time?
Well I couldn't find the name on Battletracker, ACI history or Redsack. This could simply mean you didn't play with your account with that particular name.
I don't' know where you're looking for that profile, but I couldn't find it.
If you have your e-mail address, you can go to Battletracker and under forgot password enter your e-mail and hope you had your BT with the same name.
Unless of course you didn't have a Battletracker account at all before? Because as I mentioned, there's no more official support for the game so there's no way to log in to your profile as back in the day. The only ways to retrieve your honor (that I know of) I've already mentioned and those are Battletracker, ACI History and Redsack (plus
www.draat.net as well I guess).
If you can't find your account on any of those sites, I don't know how to help you.
But as I mentioned, I'm far from allpowerful, there are admins here who could (I'm not saying they can, I just don't know) help you further than I can.