https://www.history.com/news/10-things-you-may-not-know-about-abraham-lincoln

John Wilkes Booth’s brother saved the life of Lincoln’s son.

A few months before John Wilkes Booth assassinated Lincoln, the president’s oldest son, Robert Todd Lincoln, stood on a train platform in Jersey City, New Jersey. A throng of passengers began to press the young man backwards, and he fell into the open space between the platform and a moving train. Suddenly, a hand reached out and pulled the president’s son to safety by the coat collar. Robert Todd Lincoln immediately recognized his rescuer: famous actor Edwin Booth, brother of John Wilkes. (In another eerie coincidence, on the day of Edwin Booth’s funeral—June 9, 1893—Ford’s Theatre collapsed, killing 22 people.)