イザボー・ド・バヴィエール
Catherine d'Alençon (bef.1396 – 22 June 1462 in Paris) was a younger daughter of Peter II of Alençon and his wife Marie Chamaillart, Viscountess of Beaumont-au-Maine. Catherine was the second wife of Louis VII, Duke of Bavaria. Catherine was also maid of honour to Louis' sister, Isabeau of Bavaria.