William Wallace

 was one of the leaders of the war for Scottish independence in the 13th century. Victoria Waterfield befriended him. John Fitzroy disliked Wallace and would go to any lengths to make his life miserable. He attempted to arrest the Second Doctor and his companions. When Victoria stood up to him, Fitzroy intended to kill her but Wallace killed him. After this, Wallace was forced to go on the run. (PROSE: On a Pedestal)

Behind the scenes
He was played by Brian Cox in Churchill's People.

Mel Gibson famously portrayed him in the Hollywood film Braveheart. Both the film and its leading actor were the subject of a Doctor Whoah! strip published in DWM 411.