I'm not denying that I know some of those people, (some I'm related to) , myself though I only have 1 forum account. All you can really do is believe what I'm saying, I'm not guilty of ban evasion or any other ban worthy offence.
I tend to believe the blockchain more than the "friends and family" excuse but it's really not up to me. You can appeal via e-mail to the address shown in your ban message.