The second and last known Bishop of Windisch was Gramatius (Grammatius), who signed the decrees of the Synods of Clermont in 535, of Orléans, 541, and that of Orléans in 549. It was generally believed that shortly after this the see was transferred from Windisch to Konstanz, until investigations, particularly by Marius Besson, made it probable that, between 549 and 585, the see was divided and the real seat of the bishops of Windisch transferred to Avenches (Aventicum), while the eastern part of the diocese was united with the Diocese of Konstanz.
The second and last known Bishop of Windisch was Gramatius (Grammatius), who signed the decrees of the Synods of Clermont in 535, of Orléans, 541, and that of Orléans in 549. It was generally believed that shortly after this the see was transferred from Windisch to Konstanz, until investigations, particularly by Marius Besson, made it probable that, between 549 and 585, the see was divided and the real seat of the bishops of Windisch transferred to Avenches (Aventicum), while the eastern part of the diocese was united with the Diocese of Konstanz.