Originally from Pasadena, Fr. Sebastian Walshe is a Norbertine Canon of the Abbey of St. Michael in the Diocese of Orange, California, where he is a professor of philosophy for the seminary program. After completing his studies at Thomas Aquinas College in California, he continued studies at The Catholic University of America in Washington D.C., receiving a license in Philosophy. Later, he attended the Pontifical University of St. Thomas at Rome (the Angelicum) where he received a Masters in Sacred Theology and a Doctorate in Philosophy. His thesis was entitled: "The Primacy of the Common Good as the Root of Personal Dignity in the Doctrine of St. Thomas Aquinas." From 2003-2005, Fr. Sebastian was also a visiting professor in the Philosophy Department at the Angelicum.
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