Mac Nath I Cormac

Abt 0500 -

• Name	Mac Nath I Cormac
  Birth	Abt 0500	Ireland
  Gender	Male
  Notes	Cormac (Cormacc) founded the Sil Chormaic sept (family kin group). [1] Clan name (Tuath); Sil Chormaic (Clann Cormaic) [2] Progenitor; Cormaicc (the son of) Nath Í (the son of) Crimthaind (the son of) Énnai Ceinselaig Location - River Slaney basin in County Wexford, the MacMurrough royal demesne around Ferns, as well as the barony of Scarawalsh Cinéal (Kinship); Uí Ceinnselaig Branches; Cuthraighe, Ua Trena, Ui Cruinn or Ui Cuinn, Ua Gabla Fine and Ua Gabla Roireann Sources ↑ The sons of Nath Í mac Crimthainn, a King of the Uí Cheinnselaig, were - Éogan Cáech (a king of the Uí Cheinnselaig who founded the Síl Fáelchán, Sil Máeluidir, Síl nÉladaig, and Síl Mella septs); Cormacc, who founded the Sil Chormaic sept; and Ailill, grandfather of the high-king of Ireland Áed Mac Ainmuirech. Wikipedia : Crimthann Mac Énnai ↑ Wikipedia : List of Irish Clans Jaski, Bart Genealogical tables of medieval Irish royal dynasties Table-38 Early Irish Kingship Succession by Jaski Bart, Published by Four Courts Press, 2013, ISBN 1846824265 ISBN 9781846824265 CGH - Corpus Genealogies iHiberniae Vol 1 ed. M.A. O'Brien (Dublin 1962) pg, 42-5, 50-7, 348, 356. MS - Rawlinson B502 - CELT
  Person ID	I58472	Freeman-Smith
  Last Modified	27 Jan 2026

  
  

  Father	Mac Crimthaind I Nath Í,   b. Abt 0480, Ireland
  Relationship	natural
  Family ID	F347137	Group Sheet  |  Family Chart

  
  

  Family
  Children	1. Mac CORMAIC Colmán,   b. Abt 0560, Ireland  [Father: natural]
  Family ID	F347136	Group Sheet  |  Family Chart
  Last Modified	27 Jan 2026