Albert Einstein

We all know him as one of the smartest persons to live on this planet. If not, the smartest of all.  He married his first cousin Elsa Einstein after he was caught cheating on his former wife, Mileva. Albert's and Elsa's mothers were sisters. He later cheated on Elsa by sleeping with his secretary and several other women.

This Post Belongs To 15 Famous Personalities Who Married Their Family Members