Uí Ceinnselaig

Uí Ceinnselaig
Country Ireland
Parent house Laigin
Founded 5th century
Founder Énnae Cennsalach

The Uí Ceinnselaig (also Uí Cheinnselaig, Anglicized as Kinsella), from the Old Irish "grandsons of Cennsalach", are an Irish dynasty of Leinster who trace their descent from Énnae Cennsalach, a supposed contemporary of Niall of the Nine Hostages. Énda was said to be a grandson of Bressal Bélach and a first cousin of Dúnlaing mac Énda Niada, eponymous ancestor of the rival Uí Dúnlainge.

The earliest associations of the Uí Ceinnselaig are with the region around Rathvilly, County Carlow, and the headwaters of the River Slaney, but in time the centre of their power was pushed southwards, later being found around Ferns, County Wexford, site of the monastery of the saint Máedóc of Ferns (d. 626 or 632).

In early times the kings of Leinster came from the Uí Ceinnselaig and the Uí Dúnlainge, but the Uí Dúnlainge came to dominate the kingship of the province, and after Áed mac Colggen (d. 738) it was three hundred years until the next Uí Ceinnselaig king of Leinster, Diarmait mac Máel na mBó (see list of Kings of Uí Cheinnselaig).

A branch of the family, the descendants of the Uí Ceinnselaig dynast Murchad mac Diarmata meic Máel na mBó, took the surname mac Murchada (from which modern Irish Mac Murchadha, anglicised as MacMurrough, Murphy, Morrow, etc.).[1][2][3] From this branch descended Domhnall Caomhánach, founder of the Caomhánach family.[4] Another segmant of the Uí Ceinnselaig family, the descendants of the Uí Ceinnselaig dynast Domnall Remar mac Mael na mBó, took the Irish surname Ua Domnaill.[3][5] Both branchesthe Meic Murchada and the Uí Domnaillwere bitter rivals over the kingship of Uí Ceinnselaig.[3]

Notable kings of the Uí Ceinnselaig and related kindreds included:

See also


  1. O'Byrne, E (2005). "MacMurrough". In Duffy, S. Medieval Ireland: An Encyclopedia. New York: Routledge. pp. 302303. ISBN 0-415-94052-4.
  2. Zumbuhl, M (2005). "Uí Chennselaig". In Duffy, S. Medieval Ireland: An Encyclopedia. New York: Routledge. pp. 406407. ISBN 0-415-94052-4.
  3. 1 2 3 Flanagan, MT (1981). "Mac Dalbaig, a Leinster Chieftain". The Journal of the Royal Society of Antiquaries of Ireland. 111: 513. JSTOR 25508795 via JSTOR. (subscription required (help)).
  4. MacLysaght, E (1972). Irish Families: Their Names, Arms and Origins (3rd ed.). New York: Crown Publishers. pp. 189190. OL 23251759M via Open Library. (registration required (help)).
  5. Byrne, FJ (2001). Irish Kings and High-Kings. Four Courts History Classics. Dublin: Four Courts Press. p. xxxv. ISBN 1-85182-552-5 via Google Books.
  6. Date per The Chronology of the Irish Annals, Daniel P. McCarthy

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