Oireachtas of the Irish Free State Tags: Legislature.The Oireachtas of the Irish Free State (Irish: Oireachtas Shaorstát Éireann) was the legislature of the Irish Free State from 1922 until 1937. It was established by the 1922 Constitution of Ireland which was based from the Anglo-Irish Treaty. thumbnail point house Dáil Éireann (Irish Republic), Seanad Éireann location Leinster House number of members 60, 153, 213 type Bicameralism latitude 53.3417 longitude -6.25472 Learn more... Loading...