Dáire Cerbba

Daire Cerbba (or Cerba, Cearba, Cearb) was an Irish dynast of uncertain origins, named in many early and late sources as the grandfather of the semi-mythological Mongfind and Crimthann mac Fidaig, and the most frequently named early ancestor of the historical Uí Liatháin and Uí Fidgenti. All of these are historically associated with the province of Munster, but according to the early manuscript Rawlinson B 502, Dáire Cerbba was born in Brega, County Meath, and got his epithet from a location there. This is otherwise unexplained. He may or may not have been a relative of Conall Corc, the founder of the Eóganachta dynasty.

He is often confused or paired with Maine Munchaín, who may be his father or twin brother, depending on the source, or this is an alias and the two people are the same. Both are listed in the surviving genealogies as sons of Ailill Flann Bec, grandfather of Conall Corc, but the arrangement changes from source to source.

O'Keefe's translation of the Book of Munster set forth the relationship of the several generations of this group as follows:

Fiacha Muilleathan had three sons: Oilill Flann Mor, Oilill Flann Beag and Deachluath. The latter, Deachluath, is ancestor of the tribe called Uí Fiachach Eile (in north-east of Tipperary – Thurles and Roscrea) and Oilill Flann Mor left no issue. Oilill Flann Beag had four sons:

Fiodach, to him was son Criomthann Mor mac Fiodhaig (a notorious sea raider in 369 A.D. into Scotland) and who took the fortress of Doire Da Broc from his nephews, the sons of Eochaid Mugmeadhon (of the kings of Tara) i.e., from Brian, Fiachra, Oilill and Feargus. Crimthann's sister Mongfind was mother of those four sons. So that her son, Brian, would get the kingship of Ireland, she plotted to poison her brother, Criomthann; the latter died of that poisonous drink; Mungfionn herself died as well at Inish Donglais on the Moy (Co. Mayo) - as she tasted the drink in order to induce her brother to drink from it. Crimthann, having drunk it, came to Sliabh Uidhe on Riogh "The Mountain of the King's Death" (now Cratloe Hill, Co. Clare) and there died.

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