David Campbell

David Campbell was a freedom fighter on Earth during the Daleks' invasion and occupation of Earth (2157 - 2167). He met Susan when she and the First Doctor, Ian Chesterton and Barbara Wright landed in London.

With him they stopped the destruction of London and helped destroy the Daleks 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. (DW: 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.

David was the father of Susan's child, Alex, and died soon after his birth for unknown reasons. (EDA: Legacy of the Daleks) They adopted three orphaned children, whom they named, David Campbell Junior, Ian Campbell and Barbara Campbell, after Susan's former teachers and her husband. David was heralded as a great hero for his efforts during the invasion. (BFA: An Earthly Child)