Leinster lĕn´stər, lĭn´– [key], province (1991 pop. 1,860,949), 7,580 sq mi (19,632 sq km), E Republic of Ireland, comprising the counties of Carlow , Dublin , Kildare , Kilkenny , Laoighis , Longford , Louth , Meath , Offaly , Westmeath , Wexford , and Wicklow . It contains the capital of Ireland, Dublin . During the Middle Ages, the kings of Leinster fought against the kings of Meath. Its wealth and accessibility made the ancient province subject to Danish and Anglo-Norman invasions.

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