Daniel (d. 863), grandson of Liathaite, poet and dual abbot of Lismore and Cork, was initially, it appears, airchinnech (superior) of Lismore, in succession to Flann son of Fairchellach who died on 21 December 825. It may have been viking pressure on the ecclesiastical settlement of Cork that led, some twenty-five years later, on the death of Abbot Colum son of Airechtach, to Daniel's election as comarba Bairre – coarb or successor of St Findbarr (qv) – thus making him a dual officeholder.
Daniel's reputation as a poet rests largely on the ascription to him of the poem ‘Advice to a woman’ (LL, 278a) which, if purged of certain Middle Irish forms, may indeed be a ninth-century composition. It is claimed that he was anamchara (spiritual adviser) to a certain noble lady, but as she had made attempts to solicit him, he gently rebuked her in a poem advising her to eschew such folly on pain of divine punishment – and concluded by imparting his blessing on her.
Daniel died in 863; the Annals of the Four Masters suggest that he met a violent end, dying of wounds inflicted by an assailant. The two abbacies were thereupon separated, Daniel being succeeded at Lismore by Flann (d. 894) son of Forbassach, and at Cork by Rechtabra (d. 868) son of Murchad.