Sir Edward was the brother of Lady Mary. They lived in medieval England.
When Mary was captured by bandits, Edward sent his knights to retrieve her. She was rescued by the First Doctor in his TARDIS, but the knights thought he was an evil magician. They captured the Fifth Doctor, who was trying to convince them to let him get Mary for them. They brought the Fifth Doctor to Edward, who was prepared to kill the Doctor. However, the Doctor offered him a gold bow, and Edward allowed one of his knights, Henry, to accompany the Doctor back to the TARDIS. Henry retrieved Mary and brought her back to Edward, who let the Doctor go. (PROSE: Five Card Draw)