Deheubarth

Southern Welsh kingdom which resisted English domination until the reign of Edward I. Its name derives from the Latin dextralis pars (i.e. ‘the right-hand side’) of Wales and it comprised most of southern Wales, apart from Monmouthshire and Glamorgan. The kingdom was consolidated during the 9th and 10th centuries by a series of strong and capable rulers such as Seisyll and Hywel Dda. It succeeded in holding off the Normans, although with some setbacks, until Henry II of England recognized the kingdom's independence under the leadership of Rhys ap Gruffydd (1155–97). Squabbling among his descendants left the kingdom open to subjugation and it was absorbed by 1277 when Edward I of England was accepted as overlord of Wales.