Many want to know about Gregorian Masses -- especially for deceased loved ones -- so let us begin at the beginning:Gregorian Masses date back to the end of the sixth century, when they were instituted by Pope St. Gregory the Great, a doctor of the Church. It is why these Masses take their name from him.He established them when he was Abbot of St. Andrew's Benedictine Abbey of Monte Celio in Rome -- and a rather strict one, I might add. In one of his most notable works -- called Dialogues -- Pope Gregory spoke of a monk named Justus. "See...