OMG Facts.

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

In late 1864 or early 1865 (the date is not certain), Booth and Lincoln were waiting for a train in Jersey City, New Jersey. Lincoln fell onto the train tracks from a platform as the train came towards him! Suddenly, someone grabbed him by his collar and was pulled up to safety.

The man who saved him was none other than Edwin Booth, brother of famed assassin, John Wilkes Booth! Booth did not find out the identity of Lincoln until months later when Booth joined the Union Army and was commemorated for his good deed. After his father was murdered, Robert Lincoln was comforted by Edwin Booth!

(Source)

"Edwin Booth and Robert Lincoln

Edwin Booth saved Abraham Lincoln's son,^[5] Robert, from serious injury or even death. The incident occurred on a train platform in Jersey City, New Jersey. The exact date of the incident is uncertain, but it is believed to have taken place in late 1864 or early 1865, shortly before Edwin's brother, John Wilkes Booth, assassinated President Lincoln.

Robert Lincoln recalled the incident in a 1909 letter to Richard Watson Gilder, editor of The Century Magazine.

The incident occurred while a group of passengers were late at night purchasing their sleeping car places from the conductor who stood on the station platform at the entrance of the car. The platform was about the height of the car floor, and there was of course a narrow space between the platform and the car body. There was some crowding, and I happened to be pressed by it against the car body while waiting my turn. In this situation the train began to move, and by the motion I was twisted off my feet, and had dropped somewhat, with feet downward, into the open space, and was personally helpless, when my coat collar was vigorously seized and I was quickly pulled up and out to a secure footing on the platform. Upon turning to thank my rescuer I saw it was Edwin Booth, whose face was of course well known to me, and I expressed my gratitude to him, and in doing so, called him by name.

Booth did not know the identity of the man whose life he had saved until some months later, when he received a letter from a friend, Colonel Adam Badeau, who was an officer on the staff of General Ulysses S. Grant. Badeau had heard the story from Robert Lincoln, who had since joined the Union Army and was also serving on Grant's staff. In the letter, Badeau gave his compliments to Booth for the heroic deed. The fact that he had saved the life of Abraham Lincoln's son was said to have been of some comfort to Edwin Booth following his brother's assassination of the president."  (wikipedia)