William of Ketteler (1553–57) was more Protestant than Catholic: although he regarded himself as an administrator of the old Church, and took the Tridentine oath, he refused to comply with the demands of Rome, and resigned in 1557.
Wilhelm Ketteler (1553–1557) oli rohkem protestant kui katoliiklane: kuigi ta pidas end vana kiriku halduriks ja andis Trento vande, keeldus ta allumast Rooma nõudmistele ja astus aastal 1557 tagasi.