the three cantrefi of Brycheiniog: Tewdos (also known as Mawr), Selyf, and Talgarth were their respective portions. Tewdwr ap Griffri is the last of his line to be named in the Jesus College genealogies. Several genealogical manuscripts report that Dryffin's son, Maenyrch, married the daughter of Selyf's granddaughter, Elinor. The Book of Baglan reports that Maenyrch's son Bleddyn became king of Brycheiniog; Bleddyn was the ruler at the time of the Norman invasion of England. Bleddyn married the sister of Rhys ap Tewdwr, the king of Deheubarth. End of the kingdom Many Welsh princes had been vassals or allies of the Saxon kings, so actively supported the rebellion of Eadric the Wild against the Norman presence in England. In 1070, after suppressing Eadric's forces in England, William FitzOsbern, 1st Earl of Hereford, attacked South Wales, defeating three of its kings (but notably, he is not described as having defeated a king of Brycheiniog). This past behaviour of Welsh princes naturally made the Normans ill-disposed towards them when an anti-Norman revolt broke out in Northern England ten years later. Over the previous century, Deheubarth had been contested between the heirs of Maredudd ab Owain's brother Einion (such as Hywel ab Edwin), those of his daughter Angharad (such as Gruffydd ap Llywelyn), and the rulers of Morgannwg. Rhys was of Einion's line. In 1088, Gruffydd's son-in-law, and his son-in-law's son-in-law, Bernard de Neufmarché, took part in a rebellion against King William Rufus, without being punished for it. Emboldened by this, Bernard launched attacks on an area under Rhys' influence – Brycheiniog – while the sons of Bleddyn ap Cynfyn, Gruffydd's half-brother, attacked Deheubarth; this was likely a co-ordinated action between Bernard and Bleddyn's sons. Bleddyn was defeated at the Battle of Caer-Bannau (one of Bleddyn's castles, and a former Roman army camp), while Rhys was forced to flee to Ireland. An undated charter of Bernard de Neufmarché mentioned "all the tithes of his lordship which he had in Brycheiniog in the woods and plains" (as well as Glasbury). In 1655, this charter was included in a publication (Monasticon Anglicanum by Roger Dodsworth) which amalgamated it with another of Bernard's charters, the latter being dated 1088; the charter mentioning Brycheiniog was then republished in an 1867 work (Historia et cartularium Monasterii Sancti Petri Gloucestriae by William Hart), with the added marginal gloss "AD 1088"; some people conclude from the 1867 gloss that Bernard