The Norman conquest of Dyfed that followed the killing of Rhys ap Tewdwr, king of Deheubarth, in 1093 had profound consequences for the church of St Davids. There are hints that Rhys's relations with St Davids had been close: Historia Gruffudd ap Cynan describes him as taking refuge at the church before the battle of Mynydd Carn in 1081, while a note added to the C-text of Annales Cambriae or the Annals of St Davids in British library, MS Cotton Domitian A.i states that Rhys gave Pebidiog, the cantref in which St Davids is situated, to the church the following year. Gerald of Wales similarly claimed that it was the native princes of south Wales who had endowed St Davids with Pebidiog. From the late eleventh century, however, the bishopric was subjected both to the influence of the english crown and marcher lords and to the authority of Canterbury. True, the dynasty of Deheubarth survived and staged a major territorial recovery under Gruffudd ap Rhys (ob. 1137) and his sons, most notably Rhys ap Gruffudd or the Lord Rhys (ob. 1197). Yet the context of its relations with St Davids had changed significantly. Valuable light is shed on those relations by agreements that Bishop Iorwerth of St Davids made in 1222×1223 with two sons of the Lord Rhys, Maelgwn (ob. 1230×1231) and Rhys Gryg (ob. 1233), in which the parties settled disputes concerning various lands claimed by the bishop.