Connacht or Connaught (both: kŏnˈôt, kənôtˈ) [key], province (1991 pop. 423,031), 6,611 sq mi (17,122 km), W Republic of Ireland, comprising the counties of Mayo, Sligo, Leitrim, Roscommon, and Galway. It was one of the ancient kingdoms of Ireland, whose rulers, the O'Connors, were supplanted by the Anglo-Norman De Burghs in the 13th cent.
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