The Cistercian Abbey of Rewley was an abbey in Oxford, England. It was founded in the 13th century by Edmund, 2nd Earl of Cornwall. Edmund's father, Richard, 1st Earl of Cornwall, founder of Hailes Abbey, had intended to establish a college or chantry of three secular priests to pray for his soul, but his son Edmund substituted 'six Cistercian monks, having more confidence in them'. If this was the original plan, it was soon enlarged. In 1280 he offered the general chapter of the Cistercian order to found a college (studium) for Cistercians at Oxford, and the chapter accepted the offer, and decreed that the college should have the same privileges as the college of St. Bernard at Paris, and that it should be under the Abbot of Thame, as the other was under the Abbot of Clairvaux. The following year the chapter decreed 'out of due respect to the Earl of Cornwall' that the Abbot of Thame should be empowered to appoint an Abbot of his own choice for the house of study at Oxford, and that there should be a daily memory of the late Earl of Cornwall at Mass at the college (studium) of Oxford, according as the Abbot of the place shall ordain.