Oath of Allegiance (Ireland) in the context of "Seanad Éireann (Irish Free State)"

The Irish Free State (6 December 1922 – 29 December 1937), also known by its Irish name Saorstát Éireann (English: /ˌsɛərstɑːt ˈɛərən/ SAIR-staht AIR-ən, Irish: [ˈsˠiːɾˠsˠt̪ˠaːt̪ˠ ˈeːɾʲən̪ˠ]), was a state established in December 1922 under the Anglo-Irish Treaty of December 1921. The treaty ended the three-year Irish War of Independence between the forces of the Irish Republic—the Irish Republican Army (IRA)—and British Crown forces.

The Free State was established as a dominion of the British Empire. It comprised 26 of the 32 counties of Ireland. Northern Ireland, which was made up of the remaining six counties, exercised its right under the Treaty to opt out of the new state. The Irish Free State government consisted of the governor-general—the viceregal representative of the King—and the Executive Council (cabinet), which replaced both the revolutionary Dáil Government and the Provisional Government set up under the Treaty. W. T. Cosgrave, who had led both of these administrations since August 1922, became the first president of the Executive Council (prime minister). The Oireachtas or legislature consisted of Dáil Éireann (the lower house) and Seanad Éireann (the upper house), also known as the Senate. Members of the Dáil were required to take an Oath of Allegiance to the Constitution of the Free State and to declare fidelity to the King. The oath was a key issue for opponents of the Treaty, who refused to take it and therefore did not take their seats. Pro-Treaty members, who formed Cumann na nGaedheal in 1923, held an effective majority in the Dáil from 1922 to 1927 and thereafter ruled as a minority government until 1932.

The Constitution (Removal of Oath) Act 1933 (act no. 6 of 1933, previously bill no. 2 of 1932)was an Act of the Oireachtas of the Irish Free State amending the Constitution of the Irish Free State and the Constitution of the Irish Free State (Saorstát Eireann) Act 1922. It removed the Oath of Allegiance required of members of the Oireachtas (legislature) and of non-Oireachtas extern ministers.

The oath, pledging allegiance to the Constitution and fidelity to George V as King of Ireland, was required by the Anglo-Irish Treaty signed in 1921, and had been the symbolic focus of Irish republican opposition to the Treaty in the 1922–23 Irish Civil War. When Fianna Fáil was founded in 1926 by veterans of the losing anti-Treaty side in the Civil War, abolishing the oath was a core aim. It was a main item in the manifesto for its successful 1932 general election campaign, after which it formed a minority government whose first action was to introduce the Constitution (Removal of Oath) Bill 1932. Seanad Éireann had more ex-unionists and others conciliatory towards the United Kingdom, and voted to reject the bill unless the Treaty could be amended by agreement. After the 1933 general election, the Fianna Fáil majority government was able to override the Seanad and enact the law.