Kingdom of Leinster, pre 841
Kingdom of Dublin, 841–902
Kingdom of Leinster, 902–917
Kingdom of Dublin, 917–1170
Lordship of Ireland, 1170−1542
Kingdom of Ireland, 1542−1649
Commonwealth of England, Scotland and Ireland, 1649−1660
Kingdom of Ireland, 1660–1800
United Kingdom of Great Britain and Ireland, 1801–1922
Irish Free State, 1922–1937
Republic of Ireland, 1937–present
The city of Dublin can trace its origin back more than 1,000 years, and for much of this time it has been Ireland's principal city and the cultural, educational and industrial centre of the island.