William of Ockham
From Tardis Wiki, the free Doctor Who reference
William of Ockham was a philosopher associated with Occam's razor, the principle that the simplest solution was most likely right. (AUDIO: The Lost Resort)
The Fifth Doctor told Nyssa, Tegan Jovanka and Marc that he had once met "Billy", as he called him, and that he was a great dancer. William, however, would not let him use his razor. (AUDIO: The Lost Resort)
Panda once mentioned him. (PROSE: Iris Wildthyme and the Unholy Ghost)
