Carthach Eóganacht Chaisil

✓ Carthach, king of Eóganacht Chaisil, the eponym of the MacCarthys. AI 1045.8: 'Carthach, king of Eóganacht Caisil, was burned along with many others'; AFM 1045.14: 'Carthach, son of Saerbhreathach, lord of Eoghanacht-Chaisil, was burned in a house set on fire by the grandson of Longargain, son of Donncuan, and other persons along with him.' Father of Muireadhach (d.1092) and Donnchadh (k.1092), both styled king of Eóganacht Chaisil. Sources read 26 Oct 2026: Annals of Inisfallen (Mac Airt ed.), CELT T100004; Mac Carthaigh's Book (Miscellaneous Irish Annals, Ó hInnse ed. 1947), CELT T100013; Annals of the Four Masters (O'Donovan ed.), CELT T100005B. [DIRECT ANCESTOR OF THE COMPILER: flag added 26 Oct 2026 by walking the tree from Aynsley, so that this marker is reliable and can be searched.]