Jean de Rossillon

Jean de Rossillon, a cleric from the pays de Gex, served Savoy's count from 1297 as judge of the Chablais-Genevois bailliage. After becoming a Lausanne canon, he was elected bishop there in 1323 with Pope John XXII's confirmation.

As prince-bishop he fought the sons of Aymon III de Montagny, secured episcopal rights at Avenches in 1339, and in the Laupen war sided with Fribourg against Bern. He probably died on 15 April 1341 and was buried in Lausanne Cathedral.