Career
Born at Rivolta d"Adda, he later moved to Milan with his family. Ordained a priest on May 29, 1943, Tresoldi was appointed auxiliary bishop of the Roman Catholic Archdiocese of Milan on September 28, 1970 and was ordained bishop on November 22, 1970. Bishop Tresoldi was appointed bishop of the Crema Diocese on December 10, 1981 retiring on July 11, 1996.
He died in Milan in 2009.