Historical reference: Do not rely on this information. It is very old. About this collection
Dionysius, St., the Areopagite (Acts xvii. 34), according to tradition was one of the judges of St. Paul, when he appeared before the Areopagus. He was the first Bishop of Athens, and suffered martyrdom. The four treatises on Celestial Hierarchy, Ecclesiastical Hierarchy, Divine Names, tie Theology, ascribed to him, are probably spurious and later in origin. He is sometimes confounded with the St. Denys who became the patron saint of France.