WilliamsPond /ˈbraɪən ˈwɪljəmz/: Human. Father of Rory Williams. Father-in-law of Amelia Pond. Paternal grandfather of River Song and Anthony Williams. Grandfather-in-law of The Doctor. Along with Rory and River, Brian constitutes a trio which is the only example of three generations of companions of The Doctor. Travelled to the Silurian Ark where he helped saving dinosaurs. Thought that his son was lucky to have married Amelia.