Rufino de Aquilea
Augustine of Hippo (c. 397 AD) in his book "On Christian Doctrine" (Book II, Chapter 8), Tyrannius Rufinus (c. 400 AD) in his "Commentary on the Apostles' Creed", Pope Innocent I (405 AD) in a letter to the bishop of Toulouse and John of Damascus (about 730 AD) in his work "An Exposition of the Orthodox Faith (Book IV:7)" listed "the Revelation of John the Evangelist" as a canonical book.