Conchobar Ua Conchobair

Conchobar Ua Conchobair (Anglicised as Conor O'Conor), served as tánaiste of Connacht, fl.

An army was led by Toirdhealbhach Ua Conchobhair, and he gave the kingdom of Ath-cliath and Leinster to his own son, Conchobhar; he afterwards proceeded to the South, and defeated Cormac Mac Carthaigh, and burned his camp at Sliabh-an-Caithligh.

However, the strategy backfired as the annals for 1144 record: Conchobhar, son of Toirdhealbhach Ua Conchobhair, heir apparent to the monarchy of Ireland, was killed at Bealach Muine-na-Siride, by Ua Dubhlaich, lord of Feara-Tulach, for he considered him as a stranger in sovereignty over the men of Meath.

Later that year, "four hundred cows were given by the men of Meath to Toirdhealbhach Ua Conchobhair, as eric for his son, Conchobhar."

Conchobar's death resulted in the released of his half-brother, Ruaidhri, who would eventually insinuate himself as his father's Tánaiste.