John Donne was a writer. Rector Adams had a copy of one of his books. (PROSE: Old Flames)
Ace found a copy of the complete English poems of John Donne in a Turkish hotel. (PROSE: Cat's Cradle: Warhead)
During their investigation into the death of Senbeb, the Eleventh Doctor quoted Donne to Amy Pond. He said that "Any death diminishes me, because I am involved in Mankind" and indicated that he shared the sentiment. (PROSE: The Water Thief)