Well the Full Court of Australia has come close to providing the first truly documented case:
THE Family Court has declared a "notably fair" man to be a "proud Aborigine" despite both his parents saying they are white.After a decision and an appeal, the child was allowed to leave with her mother to Ireland.
The court was asked to consider the matter after the man, who was raised white but began identifying as an Aborigine in 1999, got an Irish backpacker pregnant.
She wanted to go home to Ireland with their baby daughter, but the Family Court is required by law to give special consideration to Aboriginal children, and their need to retain links to their culture and heritage.
This would normally mean that an Aboriginal child could not be taken out of Australia to be raised by a non-Aboriginal parent.