MARINI, LEONARDO. - Bishop and Dominican theologian, b. at Chios in 1509, d. at Rome on 11 June 1573. Having entered the Dominican Order at Genoa while still young, and having completed his studies there, he devoted himself to teaching and preaching. In 1550 he was elected Bishop of Laodicea and coadjutor to Cardinal Gonzaga in the diocese of Mantua; and in 1552 Paul IV sent him on diplomatic missions to the court of Madrid.
Having been promoted to the see of Lanciano (16 January 1560), he took part in the Council of Trent (1562). His participation in the council’s work was very active, and he was responsible for drafting several decrees in their final form. Under Pius IV he collaborated in the compilation of the Roman Catechism and in the revision of liturgical books, and in May 1564 he was sent to the Emperor Ferdinand to resolve various issues concerning the application of the conciliar canons. Pius V appointed him Bishop of Alba and a special visitor to twenty-five dioceses in northern Italy for the implementation of the Tridentine reform.