David Campbell

David Campbell was a freedom fighter on Earth during the Daleks' 22nd century invasion and occupation of Earth. He married the Doctor's granddaughter Susan.

Biography
David Campbell met Susan when she and the First Doctor, Ian Chesterton and Barbara Wright landed in a ruined London.

They helped him stop the total destruction of the city and helped destroy the Dalek forces. David and Susan quickly fell in love with each other. She stayed with him to help restore the Earth. Shortly after Susan's departure from the TARDIS, they were married. (TV: The Dalek Invasion of Earth)

David and Susan spent at least thirty years together; however, by the time that David was fifty-four, Susan still looked eighteen due to her Time Lord physiology, and had to make herself look older. (PROSE: Legacy of the Daleks)

David was the father of Susan's child, Alex. He died soon after Alex's birth. (AUDIO: An Earthly Child)

They adopted three orphaned children, whom they named David Campbell Junior, Ian Campbell and Barbara Campbell, after Susan's husband and former teachers. David was heralded as a great hero for his efforts during the invasion. (PROSE: Legacy of the Daleks)