Domnall Mór Ua Cellaigh
Domnall Mór Ua Cellaigh, 42nd King of Uí Maine and 9th Chief of the Name, died 1221. Reign. Domnall Mór's reign is one of the most obscure of the High Medieval kings of Uí Maine. The kingdom is only indirectly mentioned in the annals. While the Ua Conchobair succession dispute regularly devastated Connacht and the Anglo-Irish began raids and settlement west of the Shannon. In 1189 Conchobar meanmaige Ua Conchobair was slain by a unknown culprit. Descendants. Domnall Mór is notable for the claim, noted by John O'Donovan as recorded in a Trinity College  Dublin pedigree of the Mac Eochadha (Keogh) family, that he was the common ancestor of all the extant branches of the Uí Cellaigh Uí Maine. This may simply mean that, while other lines had lost lands and status and became peasants, most of his bloodline continued to exist among the gentry after the collapse of Gaelic Ireland. This opinion is in reality, one track minded and can mean one thing, that among the army’s highest ranking men he was claimed King. Irish historians have denied the O’ Cellaigh’s war ambitions and in particular battles they participated in. It  further states that he was the ancestor of all subsequent kings and chiefs, bar four. Domnall Mór married Dubh Cobhlaigh Ní Briain, a daughter of King Domnall Mór of Thomond (died 1194). Children of Domnall Mór and Dubh Cobhlaigh included: