Ki vette feleségül John I of Lüben-t?

John I, Duke of Lüben (1425 – after 21 November 1453), was a ruler of Lüben (Lubin) during 1441–1446 with his brother, as co-rulers, Haynau (Chojnów) since 1452, Brieg (Brzeg) and Goldberg (Złotoryja) during 1449–1450 with his brother, as co-rulers.

He was the eldest son of Louis III, Duke of Ohlau-Lüben-Haynau, by his wife Margaret, daughter of Duke Bolko IV of Oppeln.

Hedwige de Brzeg (polonais : Jadwiga brzeska) (née vers 1433, morte le 21 octobre 1471) est une princesse polonaise issue de la dynastie des Piast de Silésie qui exerce la régence de 1453 à 1466 pour le compte de son fils Frédéric I^er de Legnica.