History of Fianna Fáil History of Fianna Fáil Fianna Fáil was founded on 23 March 1926 when a group of Dail deputies led by Éamon de Valera split from Sinn Féin. This happened because de Valera's motion calling for elected members be allowed to take their seats in the Dáil, if and when the controversial Oath of Allegiance was removed, failed to pass at the Sinn Féin Ard Fheis. The new party adopted its name on 2 April of the same year. From the formation of the first Fianna Fáil government on 9 March 1932 until the 2011 general election, the party was in
Sinn Féin Féin. As the "Officials" dropped all mention of Sinn Féin from their name in 1982, instead calling itself the Workers' Party of Ireland, the Provisionals were now generally known as Sinn Féin. Supporters of Republican Sinn Féin, which came from a 1986 split, still use the term "Provisional Sinn Féin" to refer to the party led by Mary Lou McDonald. Sinn Féin members have also been referred to as Shinners, a term intended as a pejorative. Sinn Féin was founded on 28 November 1905, when, at the first annual Convention of the National Council, Arthur Griffith outlined the Sinn Féin