While trying to elude Union cavalry, on April 21, 1865, the co-conspirators John Wilkes Booth and David Herold crossed by rowboat into the Northern Neck in King George County from Maryland after assassinating President Abraham Lincoln. Booth and Herold landed at the mouth of Gambo Creek before meeting with Confederate agents who guided their passage to Port Conway. There, they crossed the Rappahannock River to Port Royal in Caroline County. Booth was killed and Herold captured a short distance away at Garrett's Farm.