George Washington's family tree: A biracial history lesson

George Washington's adopted son was a bit of a ne'er-do-well by most accounts, including those of Washington himself, who wrote about his frustrations with the boy they called "Wash."

"From his infancy, I have discovered an almost unconquerable disposition to indolence in everything that did not tend to his amusements," the founding father wrote.

At the time, George Washington Parke Custis was 16 and attending Princeton, one of several schools he bounced in and out of. Before long, he was back home at Mount Vernon, where he would be accused of fathering children with slaves.