In his letter to Demon Veen (in VN's novel Ada, 1969, Van's and Ada's father) written before his duel with Captain Tapper, of Wild Violet Lodge, Van Veen says that his adversary may be the chap who was thrown out of one of Demon's gaming clubs for attempting oral intercourse with the washroom attendant, a toothless old cripple, veteran of the first Crimean War: