By Liam Moriarty, Contributor
The O’Briens are an illustrious and prominent clan that has shaped the history of Ireland. The name, also spelt O’Bryan or O’Brian, means “of Brian” indicating descendance from Brian Borumha mac Cennetig, or Brian Boru, the celebrated High King of Ireland. (The O’Briens also claim the mythological King Oilill Ollum to be their ancestor through the Dal gCais).
Brian Boru (925-1014) received the throne of Thomond (an area which covers much of modern day County Clare as well as parts of Limerick and Tipperary) after his elder brother, Mathgamain, was killed in 976. By 1002, he had attained the title of High King of Ireland, subjugating all the other kings in Ireland under his rule.
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