Giles of Rome O.S.A. (Latin: "Aegidius Romanus"; Italian: "Egidio Colonna"; c. 1243 – 22 December 1316), was a Medieval philosopher and Scholastic theologian and a friar of the Order of St Augustine, who was also appointed to the positions of Prior General of his Order and as Archbishop of Bourges. He is famed as being a logician, producing a commentary on the "Organon" by Aristotle, and for his authorship of two important works, "De Ecclesiastica Potestate", a major text of early 14th century Papalism, and "De Regimine Principum", a guide book for Christian temporal leadership. Giles was styled Doctor Fundatissimus ("Best-Grounded Teacher") by Pope Benedict XIV.