Cormac mac Ailello
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Family
About
Cormac mac Ailello stands in the king-lists as King of Leinster with a death in 535. The crown is likely his descendants' later embroidery; the rung in the family's ladder is the genealogies' own, and it holds.
Research notes
*** CURRENT GRADE - READ FIRST (15 Sep 2026): filiation ✓-per-genealogies; 'King of Leinster' ~ retrojected; d.535 = king-list date. Details in the layers below. *** ✓ DOCUMENTED (Source: the Uí Fáeláin / Uí Dúnlainge royal genealogy of Leinster, attested in the Irish Annals and the medieval tracts (Book of Leinster; Rawlinson B502 - Genelach h-Úa n-Dúnlainge); supplied 23 Jul 2026.): CORMAC MAC AILELLO, KING OF LEINSTER; d. 535. Father of Coirpre. Direct ancestor. Added 23 Jul 2026. || REGRADED 15 Sep 2026 (with his father, per DIB scholarship): the rung stands per the genealogies; the 'King of Leinster' title and d. 535 are king-list material - local dynast more likely; supremacy retrojected. Filiation ✓-per-genealogies, kingship ~.