Johan IV van Brandenburg
Member of the House of Ascania
Born: 1261
Died: 1305 (age 44 years)
Grandparents: Przemysł I of Greater Poland, John I, Margrave of Brandenburg, Elisabeth of Wrocław, and more
Great-grandparents: Valdemar II of Denmark, Henry II the Pious, Władysław Odonic, and more
Partner: Hedwig von Breslau (1302–)