The proud position that St.Mary’s held in Staines is again depicted in the stained glass window on the north side of the nave. This is a portrayal of the Archbishop of Canterbury, Stephen Langton who was present with King John at Runnemede in 1215. It was here at St Mary’s that he consecrated the bishops of St.David’s and Bangor. This was a ceremony that would have been performed only at a church of some importance. In the window can be seen the Charter of Liberties that formed the basis of the Magna Charta and which was drawn up by Henry I, an earlier Norman king. Langton’s was the first name of the witnesses of the Magna Charta. John had refused to accept his appointment as Archbishop and he was kept out of the see until 1213. No love lost there!