Castor and Pollux
From Tardis Wiki, the free Doctor Who reference
Castor and Pollux were brothers from Greek mythology. The sons of Leda and Zeus (who had taken the form of a swan), Castor was a skilled horse tamer, and Pollux was a pugilist. Castor's name was used for other things, including a place near Peterborough, Olive Oyl's brother in Popeye cartoons, and a Century class spaceship. (PROSE: Wooden Heart)