High Quality Content by WIKIPEDIA articles! 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. It was the first officially recognised independent Irish Parliament outside of Ireland since the historic Parliament of Ireland which was disbanded with the Act of Union.