Tintern Abbey was always closely associated with the lords of Chepstow, who were often generous benefactors to the Cistercian order who lived here. William Marshal was no exception and his wife, Isabel de Clare was buried here, together with her mother, Aoife Countess of Leinster, and two of her sons, Walter and Anselm.
It was his great grandson Roger Bigod III, grandson of Marshal's daughter Maud, who was the most generous benefactor, rebuilding the church in the late 13th century. It is the ruins of Roger's church, which dominate the site today. His coat of arms could be seen in the glass of the east window.