It is known to everyone who has studied the life of my son’s namesake, Gottfried Wilhelm von Leibniz, that when he was a boy, he was, for a time, locked out of the library of his dead father. A petty nobleman of Leipzig, learning of this atrocity, intervened on the boy’s behalf, and saw to it that the library-door was unlocked, and little Gottfried was given the run of the place. What is less well known is that the mysterious nobleman was named Egon von Hacklheber—a contemporary of the mighty and orgulous banker, Lothar, who made the House of Hacklheber what it is, and is not, today. Rather than offering a physical description of Lother’s little-known "stepbrother" Egon, I shall make this letter a good bit shorter by saying that he looked like you, Enoch. He vanished shortly after the conclusion of the Thirty Years’ War and was presumed murdered by highwaymen.