Giacomo Mignanelli (died 1576) was a Roman Catholic prelate who served as Bishop of Grosseto (1553–1576). Biography On 2 October 1553, Giacomo Mignanelli was appointed during the papacy of Pope Julius III as Bishop of Grosseto. He served as Bishop of Grosseto until his death in 1576. References External links and additional sources (for Chronology of Bishops) (for Chronology of Bishops) 16th-century Italian Roman Catholic bishops Bishops appointed by Pope Julius III Bishops of Grosseto 1576 deaths