Peace of Passau
After the defeat of the Schmalkaldic League in 1547, the Emperor intended to take the Country of Montbéliard. Ulrich died in 1550. After the Peace of Passau of 1552, Württemberg was allowed to keep Montbéliard. In 1553, Christoper returned Montbéliard to his uncle George, who then ruled the county until his death in 1558.