Welf I, Duke of Bavaria Duke of Bavaria (1035–1101) Parents Kunigunde of Altdorf Albert Azzo II, Margrave of Milan Children Welf II, Duke of Bavaria Henry IX, Duke of Bavaria Adelheid of Bavaria Siblings Hugh V, Count of Maine Fulco I, Margrave of Milan Partners Judith of Flanders, Countess of Northumbria Ethelinde of Northeim
