A ceremony on Leinster Lawn has marked the coming into existence of the Irish Free State 100 years ago.
The Ceann Comhairle made a speech and the event was attended by both Houses of the Oireachtas staff and political personnel.
You can read debates on the formulation of the 1922 Constitution that led to the establishment of the Irish Free State or explore the Treaty debates for more information on how the Irish Free State came into being.