St. Thomas Aquinas was born in Aquino, Italy, in 1225, the youngest son of Count Landulf. St. Aquinas received his education at the Abbey of Montecassino and at the University of Naples. In 1244, St. Aquinas entered the Dominican Order. He traveled to Paris and Cologne, studying under St. Albert the Great. He became a Master of Theology at Paris and subsequently, taught there and in Italy. He wrote a series of commentaries on the newly translated works of Aristotle to guide Christians in their reading of them. He wrote the Summa theologiae and much of the liturgy for the feast of Corpus Christi. He was declared a Doctor of the Church in 1567 by Pius V who called him the Doctor Angelicus.