William I, Duke of Bavaria

second son of Emperor Louis IV and Margaret II of Hainaut (1330–1389)

Parents

• Margaret II, Countess of Hainaut
• Louis IV of Bavaria

Children

• Elisabeth bastaard van Beieren

Siblings

• Agnes of Bavaria
• Beatrice of Bavaria
• Otto V, Duke of Bavaria
• Margaret of Bavaria, Duchess of Slavonia
• Stephen II, Duke of Bavaria
• Louis II, Elector of Brandenburg
• Matilda of Bavaria, Margravine of Meissen
• Albert I, Duke of Bavaria
• Louis V, Duke of Bavaria
• Elisabeth of Bavaria

Partners

• Catharina Gerrit Busendochter
• Maud, Countess of Leicester