Giacomo Nacchiante

[1] He was placed by his father under the protection of the superintendent of the Ospedale degli Innocenti, Florence's foundling hospital, in 1509.

Nacchiante joined the Dominican Order at the convent of San Marco, in Florence.

In 1541, Nacchiante was appointed professor of philosophy and theology at the Roman studium of the Dominican Order at Santa Maria sopra Minerva, which had developed out of the studium provinciale at Santa Sabina, and which later developed into the Pontifical University of Saint Thomas Aquinas, Angelicum.

At the Council of Trent, he made a vigorous protest against the words of the decree of the IV Session (8 April 1546), which asserts that the traditions of the church are to be received with the same reverence and piety as the scriptures, but he gave assent to the decree, when he saw it confirmed by the assembly.

Further serious suspicions of his orthodoxy seem afterwards to have arisen, and the papal secretary at the Council of Trent, Angelo Massarelli, undertook an Inquisition.