Career
Closely associated with Tighearnán Ua Ruairc, King of Bréifne, he was attached to the monastery of Daminis, and possibly to the church of Ard Brecáin, apparently been a cleric. His two famous compositions are Éri óg inis na náem and the Banshenchas. The Ó Caiside family later became – from the 14th century – prominent in Fermanagh, and many of them became hereditary doctors to the Maguire chieftains.
His known compositions are:
Éri óg inis na náem
The Banshenchas (Ádam óenathair na ndóene)
Eight poems in the lives of Saint Mo Laisse and M"Áedóc
Ca lion mionn ag Maodhócc
Certificate Maodhócc ar shluagh Mhancach
Comhroinn Maodhócc, fa mór modh
Eittirbretha Maodhócc minimum
Uasal an mac, mac Setna
Cia is fearr cairt ar dháil mláisi
Cia thairngir mlaisi ria theacht
Molaisi eolach na heagna
Cuibdea comanmann na rig
Sé rígh déag Eoghain anall.
