In 1387 Frederick imprisoned the archbishop of Salzburg to force him to finish his alliance with a confederation of cities in Swabia. Frederick was an advisor of King Wenceslaus in legal affairs and a favorable candidate for the king's succession when he died at Budweis already in 1393. He was succeeded in Bavaria-Landshut by his son Henry.
Family and children
He was married twice. First, 1360 to Anna of Neuffen, daughter of......