March 9th , 1932
Éamon de Valera (14 October 1882 – 29 August 1975) was an Irish statesman and political leader. He served several terms as head of government and head of state and had a leading role in introducing the 1937 Constitution of Ireland
In the 1932 general election Fianna Fáil secured 72 seats and became the largest party in the Dáil, although without a majority. Some Fianna Fáil members arrived at the first sitting of the new Dáil carrying arms, amid fears that Cumann na nGaedheal would not voluntarily surrender power. However, the transition was peaceful.
De Valera was elected President of the Executive Council (Prime Minister) by the Dáil by a vote of 81–68, with the support of the Labour Party and Independent politicians, and took office on 9 March.