angelfrommynightmare. Welcome to the playground.
Is it important for you to prove your ancestry to others? Or, is it good enough to know who you are? People will believe what people will believe...and accept what they choose to accept. And there will always be those who will challenge anything you have to say. If it is your mission to meet each challenge, you will live a miserable existence. KNOW THY SELF...and LET others LIVE the lie they choose to live. Beyond that, be happy.
If you look hard enough, you'll find that mixed-race people includes everyone on the planet.