Question: Who is John Sobieslaw Of Moravia's maternal grandmother?
Sentence (from "Margaret of Opava"): (Czech: "Markéta Opavská", Silesian: "Margaret s Uopawje", German: "Margaret von Troppau", Polish: "Małgorzata opawska"; 1330–1363) was the youngest daughter of Nicholas II of Opava, (grandson of Přemysl II, Otakar, King of Bohemia) and his third wife Anna of Racibórz.
Relevant evidence: Yes