I would like to say I am the real StarWarsFan1022. My brother, who plays on my account without permission, thought it would be perfectly fine to make an account in my name without my say. He has now been grounded from our computer for a month. All posts made by StarWarsFan1022 have been made by my brother and should not be taken into consideration at all.

So long as nothing outrageous has been done by this account that shouldn't be a problem but given your situation I recommend you change your passwords on these forums and your Minecraft account. If your brother does get on and start breaking rules left and right the account wil end up getting banned.