Dr. Lehman records his first episode of Catholic Saints with Mary McGeehan. St. Ambrose, Bishop of Milan, was the teacher and mentor of St. Augustine and is known for his kindness, selflessness, and generosity. As a catechumen, Ambrose was surrounded by conflict and unrest between the Catholic Christians and the Arian Heretics. After entering the Church, Ambrose was almost immediately ordained Bishop of Milan and dedicated himself to theological study and writing.