Marini was born on the island of
Chios, in the
Aegean Sea, to a noble
Genoese family. He entered the
Dominican Order and studied theology. Marini failed to be bishop of
Perugia when Pope Paul III died before he could elect him, but his successor,
Pope Julius III appointed him the administrator of the
Diocese of Mantua and bishop of the
Diocese of Laodicensis in Phrygia (March 5, 1550). Marini also served as
papal diplomat to
Emperor Charles V and
Philip II of Spain, and in 1560
Pope Pius IV appointed him
Bishop of Lanciano (and archbishop in 1562). He was
papal legate to the
Council of Trent. After being transferred to
Alba Pompeia (1566), appointed
apostolic visitor to twenty-five dioceses of Italy. Marini collaborated on the formation of the
Roman Catechism and was a member of the
Roman Breviary reform commission (1568) and of the
Roman Missal (1570). On behalf of Pius IV, he reviewed the rules and constitutions of the Clerics Regular of St. Paul (
Barnabites). == References ==