What Brittonic dialect was spoken in the kingdom who had the father of Owain mab Urien as king?
Rheged Rheged (] ) was one of the kingdoms of the "Hen Ogledd" ("Old North"), the Brittonic-speaking region of what is now Northern England and southern Scotland, during the post-Roman era and Early Middle Ages. It is recorded in several poetic and bardic sources, although its borders are not described in any of them. Some modern scholars have suggested that it included what is now Cumbria in North West England and possibly extended into Lancashire and Scotland. In some sources, Rheged is intimately associated with the king Urien Rheged and his family. Its inhabitants spoke Cumbric, a Brittonic dialect closely related to Old Welsh.
History of Gwynedd during the High Middle Ages The history of Gwynedd in the High Middle Ages is a period in the History of Wales spanning the 11th through the 13th centuries. Gwynedd, located in the north of Wales, eventually became the most dominant of Welsh principalities during this period. Distinctive achievements in Gwynedd include further development of Medieval Welsh literature, particularly poets known as the "Beirdd y Tywysogion" (Welsh for "Poets of the Princes") associated with the court of Gwynedd; the reformation of bardic schools; and the continued development of "Cyfraith Hywel" ("The Law of Hywel", or "Welsh law"). All three of these further contributed to the development of a Welsh national identity in the face of Anglo-Norman .