Why not just use your brothers name?
I fucked up big time when i did mine and hope i just dont get busted. A good friend of mine online didnt want his wow account anymore so he gave it to me, i didnt want 2 accounts a few years ago so i sold mine :S and continued to use hes. So when it came time to start boxing I made 4 accounts in hes name. So according to blizzard I have a different identity. The only problem really is the account my misses uses is in the name of my older brother. I regret not just buying 5 new accounts and disabling my main account for the time being.