Jagiello's baptism failed to end the crusade of the Teutonic Knights, who claimed his conversion was a sham, perhaps even a heresy, and renewed their incursions on the pretext that pagans remained in Lithuania. From then on, however, the Order found it harder to sustain the cause of a crusade and faced the growing threat to its existence posed by the Kingdom of Poland and a genuinely Christian Lithuania alliance. Władysław sponsored the creation of the diocese of Vilnius under bishop Andrzej Wasilko, the former confessor of Elizabeth of Poland. The bishopric, which included Samogitia, then largely controlled by the Teutonic Order, was subordinated to the see of Gniezno and not to that of Teutonic Königsberg. The decision may not have improved Władysław's relations with the Order, but it served to introduce closer ties between Lithuania and Poland, enabling the Polish church to freely assist its Lithuanian counterpart.