Sir Francis Walsingham was the principal secretary to Queen Elizabeth I of England during the late 16th century. He was the founding member of the Star Chamber, which also originally included John Dee. (COMIC: Bêtes Noires & Dark Horses) Together, they founded the Service. (PROSE: Newtons Sleep)
In 1588, William Redcliffe was in his service. (AUDIO: The Devil's Armada)
In 1590, the Sixth Doctor went to visit Walsingham about Christopher Marlowe. He tortured the Doctor and later employed him as a spy. (AUDIO: Point of Entry)