Complex sentence: A custom arose of a student preaching before the Pope every St Stephen's Day on the theme of Martyrdom-Bl. John Cornelius called the College the "Pontifical Seminary of Martyrs" in his St Stephen's sermon of 1581.
Split into simpler sentences: A custom arose of a student preaching before the Pope every St Stephen's Day on the theme of Martyrdom. Blessed John Cornelius called the College the "Pontifical Seminary of Martyrs" in his St Stephen's sermon of 1581.