Connor na-Siuddine O'Brien
d. 1268
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Connor na Siudaine O'Brien was King of Thomond and was killed in 1268. He is buried at Corcomroe Abbey, where his effigy, one of the finest surviving Gaelic royal tombs in Ireland, still lies.
Research notes
✓ (O'Hart, Irish Pedigrees (1892), 'O'Brien (No.1) King of Thomond', gen. nos. as cited; corroborated by the Annals of the Four Masters and by the DC782/R-L226 O'Brien Y-DNA study (which independently numbers this same descent 105 Brian Boru -> 120 Turlogh Donn). Wired 23 Jul 2026.): CONNOR-NA-SIUDDINE O'BRIEN - SLAIN at the Wood of Siudan, Burren, co. Clare, 1268 (whence the epithet); interred at Corcomroe Abbey, where HIS CARVED TOMB EFFIGY SURVIVES - a mailed 13th-c warrior, famously shown with a short pipe. m. Mor, dau. of MacNamara, Lord of Hy-Coileann. Father of Teige (our line). Direct ancestor.