Blackbeard

Blackbeard was an English pirate and the subject of several works of fiction. The Master of the Land summoned Blackbeard in his mental battle with the Second Doctor. (TV: The Mind Robber)

The Tenth Doctor told Martha Jones that she could forget her Bonapartes, her Boadiceas, and her Blackbeards when introducing her to the pirate Baltazar. (TV: The Infinite Quest)