The priory of St Frideswide, Oxford was established as a priory of Augustinian canons regular, in 1122. It was set up by Gwymund, chaplain to Henry I of England. It lasted to the 1520s, when it was dissolved by Cardinal Wolsey so that he could use its premises together with those of other adjacent religious houses to found a new college to be called Cardinal College. After Wolsey fell from power in 1530, King Henry VIII took over the nascent foundation, which he renamed "Aedes Christi" Christ Church, Oxford. The five western bays of the nave of the church of the Augustinian canons were demolished to make space to build the main quadrangle of the new college (now called Tom Quad): and the intention was to demolish the remainder of the church and replace it with a chapel on the north side of the quadrangle. That never happened; and the surviving portion of the church, including the five remaining bays of the nave, became both the chapel for the new college and the cathedral for the new Diocese of Oxford which Henry VIII had separated from the Diocese of Lincoln. (See Christ Church Cathedral, Oxford).
The original nunnery founded by Frideswide was destroyed in 1002.[1] After that there was a monastery of secular canons.[2]