Roman Catholic Diocese of Lausanne, Geneva and Fribourg in a papal brief of 20 September 1819, the city of Geneva and twenty parishes belonging to the old Diocese of Geneva (which in 1815 had become Swiss) to the See of Lausanne. The bishop (in 1815 Petrus Tohias Yenni) retained his residence at Fribourg, and since 1821 has borne the title and arms of the Bishops of Lausanne and Geneva. His vicar general resides at Geneva, and is always parish priest of that city. Bishop Yenni died on 8 December 1845 and was succeeded by Etienne Marilley. Deposed in 1848 by the Cantons of Berne, Geneva, Vaud and Neuchâtel,
History of Geneva were often tensions between Calvin and the city's civil authorities. Calvin also supported the admission into Geneva of Protestant refugees, which some circles strongly opposed. Though the city proper remained a Protestant stronghold, a large part of the historic diocese returned to Catholicism in the early seventeenth century under St. Francis de Sales. Geneva has played a historical role in the spread of Protestantism. In addition to becoming a Protestant state, Geneva in the 16th century also became a kind of welfare state, as a general state hospital was established in 1535 by the wealthy Protestant Claude Salomon. A centralized