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The Dál gCais (Irish pronunciation: [d̪ɑːɫ ɡaʃ]; also Dal Cais or the Dalcassians) were a dynastic group of related septs located in north Munster who rose to political prominence in the early medieval era in Ireland. They are desceded from Cormac Cas, or Cas mac Conall Echlúath, hence the term "Dál", meaning "portion" or "share" of Cas. In later times, for reasons of political expediency, they claimed descent from the ancestor of the Eóganachta Kings of Munster, Oilliol Olum (also known as Ailill Aulom).
In early historic Ireland they were an obscure group, one of many of the subject peoples of the Éoganacht. In the seventh and eighth centuries, when the overkingdom of Uí Fiachrach Aidhne fell into decline, they moved north and annexed Tuad Mumu (Thomond). Previously part of Connacht, it became part of Munster.
Thomond was to remain the heartland of the Dal gCais and its septs; it is most especially associated with the family of O'Brien (Ua Briain, Ó Briain), who reigned as its kings from the 930s to 1543, and from 1543 to the present day as Baron Inchiquin. The current incumbent (18th Baron Inchiquin) is Conor O'Brien, a thirty-second generation descendant of Brian Boru High King of Ireland, 1002-1014. He is also known simply as The O'Brien, and is Chief of the Name, Prince of Thomond (see his profile).
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Origins
The origins of the Dál gCais are among the most controversial in Irish history.
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This section requires expansion. |
List of septs
Below is a comprehensive list of the Dalcassian septs of the Kingdom of Thomond. It should be noted that some of these names are also used by other tribes in Ireland, thus not every single person with one of the names is necessarily a member of this clan, it is rather a matter of specific genealogy coupled with the location origins.[1]
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Dál gCais genealogy
Sept names in brackets, under the name of their ancestral namesake. Numerals indicates number of generations between ancestor and descendant.
Conall Echlúath
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Cas
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|_____________________
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Caisséne Blat
(Uí Chaisséne) (Uí Blait)
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| |_____________________
Cáirthenn | |
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6 Brénainn Bán Cáirthenn Finn
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Nárgalach (Muinter Bruig) |____________
(Síl Nárgalaíg) (Ua Maol Dhómhnaigh) | |
| | |
|_________________ Óengus Eochu Ballderg
| | (Uí Óengusso) |
| | | |__________________
Corerán Marcín Rónan | |
(Uí Chellaig) (Uí Sída) | | |
(Uí Cholmáin) (Uí Rodáin) | Conall Conall Cáem
(Uí Chiunáin) _________| | |
(Uí Láega) | | | |
| | Fíán Áed
Dímma Máel Cáith | |
| (Uí Fallamain) |
| Aithirne
Róngaile |
(Uí Róngaile) |
| Cathal ?
Dubh dá Leithe |
(Uí Chormacáin) |
(Uí Loingsig) Tairdelbaig
(Uí Uainidi) (Uí Thairdelbaig)
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_____________________________________________________________|
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Flannán Eochu Ailgel Mathgamain
Sanctus (Uí Echach) (Uí Aingile) |
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__________|__________________ Eochu Anulaun
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| | | |______________ |
Conall Animchad Aurthuile | | Corc
(áes Cluana) | | | | |
| 6 3 Fócarta Scandlán |
4 | | Uí Magair) (Uí Scandlán) Lachtna
| (Meic Cétfada) (Uí Chuinn) (Uí Árotháin) | |
Énna (Meic Cormaic) (Uí Aichir) |
(Uí Énna) (Uí Thaidc) Lorcán
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Cennétig, Rí Thuath Mumain, d. 951. Coscrach
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| _______________________|_______________________
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| Maine Aingid Aitheir
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| Cathal, abbot Killaloe, Coscrach, abbot Killaloe, Ogan
| died 1013 died 1040 (Ua hOgain)
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|____________________________________________________________
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Brian, Rí Éire, d. 1014. Marcán, abbot of Terryglass, Donncuan
(Ua Briain) Inis Cealtra & Killaloe; d. 1010 |
|__________________ ______________________|_____________
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Tadc, d. 1023 Donnchad, d. 1064. Céilchair Londgargán Cennétig Connaig
| abb.Terryglass | | |
| d.1008 | | |
Toirdhealbhach Ua Briain, High King, Annud Find Dúnadach
died 1086 issue issue issue
See also
- Irish nobility
- Irish royal families
- The Déisi
- Kings of Déisi Tuisceart
- Kings of the Déisi Muman
- Brian Boru
- High King of Ireland
- List of High Kings of Ireland
- Rock of Cashel
- Early Medieval Ireland 800-1166
- County Clare
- Cogad Gáedel re Gallaib
References
- "Dál gCais - Church and Dynasty", Donncha Ó Corráin,
- ^ "Dál gCais or The Dalcassians of Thomond". DalcassianSept.com. 12 November 2008. http://www.dalcassiansept.com/pedigrees/dalcassian.htm.
Further reading
- Byrne, Francis John, Irish Kings and High-Kings. Four Courts Press. 2nd edition, 2001.
- MacLysaght, Edward, Irish Families: Their Names, Arms and Origins. Irish Academic Press. 4th edition, 1998.
- O'Brien, Barry, Munster at War. Cork: Mercier Press. 1971.
- Rynne, Etienne (ed.), North Munster Studies: Essays in Commemoration of Monsignor Michael Moloney. Limerick. 1967.
- Todd, James Henthorn (ed. and tr.), Cogadh Gaedhel re Gallaibh: The War of the Gaedhil with the Gaill Longmans. 1867.
External links
- The O'Brien Clan
- The Dalcassians of Thomond (web archive)
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