Little known Robert E. Lee trivia:
Robert E. Lee was married to Mary Anna Randolph Custis who was the great-granddaughter of Martha Washington by her first husband Daniel Parke Custis.
That made her the step-great-granddaughter of General, and first president of the United States, George Washington.
Mary was the only surviving child of George Washington Parke Custis, George Washington’s stepgrandson.
Robert E. Lee and George Washington were also blood relatives. They were third cousins twice removed. That is Washington’s great great grandfather was Lee’s great great great great grandfather.