The executive branch of the modern state of Ireland is titled the Government of Ireland. It has had this title since the adoption of the Constitution of Ireland in 1937. The Ministry of Dáil Éireann was the cabinet of the Irish Republic, from operated from 1919 to 1922. This overlapped with the Provisional Government which was put in place after the approval of the Anglo-Irish Treaty in January 1922. Both these cabinets ceased to operate from December 1922, on the coming into being of the Irish Free State. From 1922 to 1937, the cabinet was known as the Executive Council of the Irish Free State.