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Cas or Tál Cas was the eponymous ancestor and dynastic founder of the Dál gCais (''Deisi Tuaiscirt'') clan in
Gaelic Ireland Gaelic Ireland () was the Gaelic political and social order, and associated culture, that existed in Ireland from the late Prehistory of Ireland, prehistoric era until the 17th century. It comprised the whole island before Anglo-Norman invasi ...
, from whom all branches of the Dalcassian dynasty claim common descent.


Life

Tál Cas was the son of Conall Eachluath and his wife Coirpthe, daughter of Eochaid Mugmedon. He acquired the nickname Tál (meaning " adze") as he was the foster son of a wright. He became King of Thomond and made a gavel of his territory among his thirteen sons. On his death the kingship of Thomond passed to his eldest son Blait.
Tadhg Ó Donnchadha Tadhg Ó Donnchadha (1874 – 1949) was an Irish writer, poet, editor, translator and a prominent member of the Gaelic League (''Conradh na Gaeilge'') and the Gaelic Athletic Association. He was editor of ''Irisleabhar na Gaedhilge'' (The ...
,"An Leabhar Muimhneach", 1900, page 86, page 237, page 295, https://archive.org/details/leabharmuimhneac01odon/page/86/mode/2up, https://archive.org/details/leabharmuimhneac01odon/page/236/mode/2up, https://archive.org/details/leabharmuimhneac01odon/page/294/mode/2up


Family

He had thirteen sons, at least three of whom would found substantial lineages whose descendants would rule as lords over substantial territories: * Blod (''Uí Bhloid'') **Carthann Fionn ***Oenghus (''Uí Óengussa'') ****''Uí Ronghaile'' ****''Uí Chearnaigh'' *** Eochaidh Bailldearg ****''Uí Floinn'' ****''Uí Thoirdhealbhach'' *****'' Ua Briain'' *****'' Ua Cinnéidigh'' *****'' Ua hEachthighearn'' * Caisín (''Ua Caisin'') **Eochaidh ***''Cinéal nDúnghaile'' ** Sineall ***''Uí Dhobharchon'' **Carthann ***''Clan Cuiléin'' **** Eoghan mac Cuiléin *****''Clan Cuiléin Uachtarach'' **** Maol Cluiche mac Cuiléin *****'' Mac Conmara'' *****'' Ua hAllmharain'' *****'' Ua hArtagain'' * Aonghus Ceann-nathrach ** ''Cinéal Fermaic'' ***'' Ua Deághaidh'' ** ''Cinéal gCuallachtaigh'' ***'' Ó Gríobhtha'' ** ''Cinéal mBaoi'' * Aonghus Ceann-aitinn ** ''Clann Ifeamain'' ** ''Clann Neachtain'' * Lughaidh/Dealbhaoth ** ''na Dealbhna'' ** ''Muinnter Chochláin'' * Carthann ** ''Dal gCais Leithe Lachtmhuighe'' * Aedh ** ''Ui Aedha'' * Lughaidh Éile ** ''Muinnter Dhobharchon'' ** ''Muinnter Chonraoi'' ** ''Muinnter Chearnaigh'' ** ''Muinnter Aonghusa'' ** ''Muinnter Dhubhthaigh'' * Séadna * Cormac * Caindeach * Nae * Loisceann


Genealogy

Surnames purported to be of Dalcassian origin have a statistically significant correlation with the possession of the Y-DNA signature R-L226 and thus this mutation is believed to be associated with their ancestral founder.


References

{{reflist Dalcassians