History of Gwynedd in the High Middle Ages
aspect of history

The history of Gwynedd in the High Middle Ages is a period in the history of Wales spanning the 11th to the 13th centuries. Gwynedd, located in the north of Wales, eventually became the most dominant of Welsh polities during this period. Contact with continental courts allowed for Gwynedd to transition from a petty kingdom into an increasingly sophisticated principality of seasoned courtiers capable of high-level diplomacy and representation, not only with the Angevin kings of England, but with the king of France and the Papacy. Distinctive achievements in Gwynedd include the further development of medieval Welsh literature, particularly the work of the princely court poets known as Beirdd y Tywysogion ('Poets of the Princes') and the reformation of bardic schools; and the continued development of Cyfraith Hywel ('The Law of Hywel'; that is, medieval Welsh law). All three of these further contributed to the development of a Welsh national identity in the face of Anglo-Norman encroachment on Wales.
Gwynedd's traditional territory included Anglesey (Ynys Môn) and all of north Wales between the River Dyfi in the south and River Dee (Dyfrdwy) in the northeast. The Irish Sea (Môr Iwerddon) lies to the north and west, and lands formerly part of the Kingdom of Powys border the south-east. Gwynedd's strength was due in part to the region's mountainous geography which made it difficult for foreign invaders to campaign in the country and impose their will effectively.
Gwynedd emerged from the Early Middle Ages having suffered from increasing Viking raids and various occupations by rival Welsh princes, causing political and social upheaval. With the historic Aberffraw family displaced, by the mid-11th century Gwynedd was united with the rest of Wales by the conquest of Gruffydd ap Llywelyn, followed by the Norman invasions between 1067 and 1100.
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This entry incorporates text from “History of Gwynedd in the High Middle Ages” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.