Henry IX, called the Black, a member of the House of Welf, was Duke of Bavaria from 1120 to 1126. Wikipedia
Born: 1075
Died: December 13, 1126 (age 51 years), Ravensburg, Germany
Parents: Welf I, Duke of Bavaria and Judith of Flanders
Great-grandparents: Welf II, Count of Swabia, Richard II, Duke of Normandy, Judith of Brittany, and more
Grandparents: Albert Azzo II, Margrave of Milan, Kunigunde of Altdorf, Baldwin IV, Count of Flanders, and more
Children: Henry X, Duke of Bavaria, Judith of Bavaria, Duchess of Swabia, Welf VI, and more
Deposed date: 1126