When did Otto V, Duke of Bavaria's father become the King of the Romans?
Otto V, Duke of Bavaria Otto V the Bavarian, Duke of Bavaria (1340/42 – 15 November 1379), was a Duke of Bavaria and Elector of Brandenburg as Otto VII. Otto was the fourth son of Holy Roman Emperor Louis IV by his second wife Margaret II of Avesnes, Countess of Hainaut and Holland.
Otto III, Count of Waldeck Otto III, Count of Waldeck-Landau (  1389 – 1458 or 1459) was the second ruling count of the elder Waldeck-Landau line, which had started. He was the son of Count Adolph III, who had founded the elder Waldeck-Landau in 1397, and his wife, Agnes of Ziegenhain.