(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.
Writers in 14th and 15th century England such as John Trevisa and Thomas Hoccleve translated or adapted him into English.