People France Guillaume de Marcossey peoplepill id: guillaume-de-marcosseyGDM 11 views today 11 views this week��vêque de Gap puis de GenèveGuillaume de MarcosseyBiographyGallery (2)ListsAlso ViewedListsGuillaume de Marcossey is in following listsBy field of workNotable French people in religionGender:MaleBy work and/or countryNotable French PriestsGender:MaleNotable French BishopsGender:MaleBy religionCatholic churchFrom our partnersSponsoredGuillaume de Marcossey