Margaret of Opava was the youngest daughter of Nicholas II of Opava, and his third wife Anna of Racibórz. She became Margravine consort of Moravia by her marriage to John Henry of Moravia.
Margaret was buried in Saint Thomas, Brno. Wikipedia
Born: Opava, Czechia
Died: 1363, Brno, Czechia
Children: Elisabeth of Moravia, John Sobieslaw of Moravia, Prokop of Moravia, and more
Parents: Nicholas II, Duke of Opava and Anna of Racibórz
Grandchild: George of Luxembourg
Spouse: John Henry, Margrave of Moravia (m. 1350)