George Nicolls was an Irish

Ireland

Ireland is an island to the northwest of continental Europe. It is the third-largest island in Europe and the twentieth-largest island on Earth...

 politician and solicitor. He was first elected at the 1921 elections

Irish elections, 1921

Two elections in Ireland took place in 1921, as a result of the Government of Ireland Act 1920 to establish the House of Commons of Northern Ireland and the House of Commons of Southern Ireland. The election was used by Irish Republicans as the basis of membership of the Second Dáil...

 for the Galway constituency

Galway (Dáil Éireann constituency)

Galway was a parliamentary constituency represented in Dáil Éireann, the lower house of the Irish parliament or Oireachtas from 1921 to 1937. The method of election was the single transferable vote form of proportional representation .- History :...

 as a Sinn Féin

Sinn Féin

Sinn Féin is a left wing, Irish republican political party in Ireland. The name is Irish for "ourselves" or "we ourselves", although it is frequently mistranslated as "ourselves alone". Originating in the Sinn Féin organisation founded in 1905 by Arthur Griffith, it took its current form in 1970...

 Teachta Dála

Teachta Dála

A Teachta Dála , usually abbreviated as TD in English, is a member of Dáil Éireann, the lower house of the Oireachtas . It is the equivalent of terms such as "Member of Parliament" or "deputy" used in other states. The official translation of the term is "Deputy to the Dáil", though a more literal...

 (TD) to the 2nd Dáil

Second Dáil

The Second Dáil was Dáil Éireann as it convened from 16 August 1921 until 8 June 1922. From 1919–1922 Dáil Éireann was the revolutionary parliament of the self-proclaimed Irish Republic. The Second Dáil consisted of members elected in 1921...

. In January 1922, he was appointed Assistant Minister for Home Affairs in the Fourth Ministry.

Following the Anglo-Irish Treaty

Anglo-Irish Treaty

The Anglo-Irish Treaty , officially called the Articles of Agreement for a Treaty Between Great Britain and Ireland, was a treaty between the Government of the United Kingdom of Great Britain and Ireland and representatives of the secessionist Irish Republic that concluded the Irish War of...

, he sided with Michael Collins

Michael Collins (Irish leader)

Michael "Mick" Collins was an Irish revolutionary leader, Minister for Finance and Teachta Dála for Cork South in the First Dáil of 1919, Director of Intelligence for the IRA, and member of the Irish delegation during the Anglo-Irish Treaty negotiations. Subsequently, he was both Chairman of the...

 and voted in favour

Anglo-Irish Treaty Dáil vote

The Anglo-Irish Treaty was signed in London on 6 December 1921. Dáil Éireann voted on the treaty on 7 January 1922, following a debate through late December 1921 and into January 1922.-Result:Of the 125 Teachtaí Dála , 121 cast their vote in the Dáil...

 of it. He was re-elected at the 1922 general election

Irish general election, 1922

The Irish general election of 1922 took place in Southern Ireland on 16 June 1922, under the provisions of the 1921 Anglo-Irish Treaty to elect a constituent assembly paving the way for the formal establishment of the Irish Free State...

 as a pro-Treaty Sinn Féin TD. At the 1923 general election

Irish general election, 1923

The Irish general election of 1923 was held on 27 August 1923. The newly elected members of the 4th Dáil assembled at Leinster House on 19 September when the new President of the Executive Council and Executive Council of the Irish Free State were appointed. The election was held just after the end...

, he was re-elected as a Cumann na nGaedheal TD. In the 4th Dáil, he was appointed as Parliamentary Secretary to the Minister for Defence and served from 1925–27.