Washington adopts Hamilton, perhaps? The former was always a father-like figure for the latter to the point it was even rumored Washington was Hamilton's true father.
How did that get started? It's a pretty well documented fact that he was born in the Caribbean, I mean he didn't even come to the North American colonies until he was 18.
Indeed, but Washington is recorded as being in the Carribean around the time Hamilton was born.
EDIT: After researching this I've found that Washington visited Barbados whenever Hamilton's mother was there, in fact