Sebastiaan Tromp

Sebastiaan Peter Cornelis Tromp (16 March 1889 – 8 February 1975) was a Dutch Jesuit priest, theologian, and Latinist, who is best known for assisting Pope Pius XII in his theological encyclicals, and Pope John XXIII in the preparation for Vatican II. He was an assistant to Cardinal Alfredo Ottaviani during the Council and professor of Catholic theology at the Pontifical Gregorian University from 1929 until 1967. Provided by Wikipedia