The Bishop of Basel, Jakob Christoph Blarer von Wartensee, moved his seat to Porrentruy in the Jura mountains in 1529, when Basel became Protestant. In 1581, the bishopric regained the Birs valley lying southwest of Basel. In Appenzell, where both confessions coexisted more or less peacefully, the counter-reformatory activities beginning with the arrival of the Capuchin friars resulted in a split of the canton in 1597 into the Catholic Appenzell Innerrhoden and the Protestant Ausserrhoden, which both had one vote in the "Tagsatzung".