Question: When did John Casimir, Count Palatine Of Kleeburg's mother die?
Sentence (from "Magdalene of Jülich-Cleves-Berg"): Magdalene's husband John claimed the inheritance for Palatinate-Zweibrücken, as did the Elector of Brandenburg, John Sigismund, who was married to Anna, a daughter of Magdalena's sister Marie Eleonore
Relevant evidence: No