Albert I, Duke of Bavaria Count of Hainaut, Holland and Zeeland (1336-1404) (1336–1404) Parents Margaret II, Countess of Hainaut Louis IV of Bavaria Children Willem I van Beieren-Schagen Joanna of Bavaria Margaret of Bavaria Albert II, Duke of Bavaria William II, Duke of Bavaria John III, Duke of Bavaria Joanna Sophia of Bavaria Katherine of Bavaria Siblings Agnes of Bavaria Beatrice of Bavaria Margaret of Bavaria, Duchess of Slavonia Louis V, Duke of Bavaria Otto V, Duke of Bavaria William I, Duke of Bavaria Elisabeth of Bavaria Matilda of Bavaria, Margravine of Meissen Stephen II, Duke of Bavaria Louis II, Elector of Brandenburg Partners Maria van Bronkhorst Aleid van Poelgeest Margaret of Brieg Margaret of Cleves, Duchess of Bavaria-Straubing
