Divide and Rule
Toirdelbach employed the policy of divide and rule to maintain control of Leinster and to prevent the emergence of a rival in Connacht. In the north, he supported the Ulaid to weaken the Cenél nEógain kings of Ailech. This policy was successful in keeping Leinster pacified, but was less successful in dealing with the Cenél nEógain of the north and the kings of Connacht in the west.
The Cenél nEógain, who appear to have had no widely-accepted candidates for the kingship, hit upon a candidate in the person of Conchobar Ua Briain, grandson of Toirdelbach's uncle Donnchad mac Briain and Toirdelbach's most obvious rival for the kingship of Munster. Conchobar was king for only a short time when he was murdered, along with his wife. His brother Cennétig was chosen to succeed him.
In Connacht, three rival branches of the Uí Briúin, the Ua Conchobair, the Ua Flaithbertaig, and the Ua Ruairc, were in competition. Ruaidrí na Saide Buide of the Ua Conchobair was king of Connacht when he submitted to Toirdelbach in 1076. Toirdelbach deposed Ruaidrí in 1079 and replaced him with an Ua Ruairc, Áed son of Art Uallach.
The Ua Ruairc proved to be a threat to Toirdelbach and to their neighbours. Máel Sechnaill, king of Mide, submitted to Toirdelbach in 1080, perhaps for fear of Ua Ruairc. War broke out in 1084 between Toirdelbach and the Ua Ruairc, joined by Cennétig Ua Briain. Toirdelbach raided Mide, but while he was absent the Conmaicne, clients of the Ua Ruairc, raided Munster. A battle was fought at Monecronock, near modern Leixlip, on 19 October 1082 where Toirdelbach's sons Muirchertach and Tadc won, killing Domnall Ua Ruairc and Cennétig Ua Briain.
Read more about this topic: Toirdelbach Ua Briain
Famous quotes containing the words divide and/or rule:
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My heart mine eye the freedom of that right.”
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“When we can drain the Ocean into mill-ponds, and bottle up the Force of Gravity, to be sold by retail, in gas jars; then may we hope to comprehend the infinitudes of man’s soul under formulas of Profit and Loss; and rule over this too, as over a patent engine, by checks, and valves, and balances.”
—Thomas Carlyle (1795–1881)