In a conversation at the Faculty Club Kinbote (in VN’s novel Pale Fire, 1962, Shade’s mad commentator who imagines that he is Charles the Beloved, the last self-exiled king of Zembla) tells Professor Pardon that he is confusing him with some refugee from Nova Zembla:
Professor Pardon now spoke to me: "I was under the impression that you were born in Russia, and that your name was a kind of anagram of Botkin or Botkine?"