Ynys Manau (often spelt Ynys Manaw, which is the modern Welsh spelling) was a Brythonic kingdom that variously ruled over the Isle of Man from around 550 AD until 825 AD.
History Ynys Manau was originally a territory of the Kingdom of Galwyddel (modern Galloway) until the mainland was invaded by the Kingdom of Rheged under Urien around 550 AD. The King of Galwyddel, Senyllt ap Dingat, was forced to flee to the Isle of Man, where he established a lineage of kings.
In 578, during or following the reign of King Neithon ap Senyllt, Ynys Manau was occupied by the Kingdom of Ulaid under its king, Báetán mac Cairill.AU 577.6; 578.2; Byrne, pg.110; Mac Niocaill, pg.78; Ó Cróinín (EMI), pg. 50; Ó Cróinín (NHI), pg.216. This was until 582 when the Kingdom of Dál Riada took control of the island under its king, Áedán mac Gabráin.AU 582.1; AT 580.1 At some point in the late 500s, Neithon's son Rhun ap Neithon regained control over Ynys Manau, re-establishing the Brythonic Kingdom.
The Isle of Man came under the rule of Edwin, King of Bernicia and Deira, from 620 to 633.
The lineage of Senyllt ap Dingat continued to rule an independent Ynys Manau until 825, when Merfyn Frych became King of Gwynedd and incorporated the Isle of Man into that kingdom.
List of kings
NameReignNotesRoyal houseStartEnd Senyllt c.550Late 500sSon of Dingat ap TudwalHouse of Alt ClutNeithon Late 500s578Son of Senyllt ap DingatBáetán mac Cairill 578582Also King of UlaidHouse of UlaidÁedán mac Gabráin 582c.600Also King of Dál RiadaCenél nGabrainRhun Late 500sEarly 600sSon of Neithon ap SenylltHouse of Alt ClutTudwal II Early 600sMid 600sSon of Rhun ap NeithonAnllech Mid 600s620Son of Tudwal ap RhunEdwin of Northumbria 620633Also King of Bernicia and DeiraHouse of DeiraCynin 633Mid 600sSon of Anllech ap TudwalHouse of Alt ClutMermin Fawr Mid 600s682Son of Cynin ap AnllechAnaraud 682Late 600sSon of Mermin FawrTudwal III Late 600sEarly 700sSon of Anaraud ap MerminIudgual Early 700sMid 700sSon of Tudwal ap AnarawdCelemion Mid 700sLate 700sDaughter of Tudwal ap Anarawd;Possibly ruled jointly with her husband SanddeSandde Mid 700s790Husband of Celemion ferch Tudwal;Ruled jure uxoris Male-line descendant of Llywarch HenCoelingElidyr 790Early 800sSon of Sandde ap Alcwn and Celemion ferch TudwalGwriad Early 800sEarly 800sSon of Elidyr ap Sandde;married Esyllt, daughter of Cynan, King of GwyneddMerfyn Frych Early 800s825Son of Gwriad ap Elidyr;Ynys Manau annexed into Gwynedd
References