You Killed My Brother. We Must Have a Duel

Donald M. Richardson? Olwyn Orde Browne? T. K. Steele? Anonymous? Dear Quote Investigator: When I was a child I heard a circular story, i.e., a story that was designed to be repeated. The details are hazy, but I know there was a duel and a character named Zanzibar. Would you please help me to recover …