Sinn Féin for nine years. (It merged with two other organisations to form Fine Gael in 1933.) Anti-Treaty Sinn Féin members continued to boycott the Dáil. At a special "Ard Fheis" in March 1926, de Valera proposed that elected members be allowed to take their seats in the Dáil if and when the controversial Oath of Allegiance was removed. When his motion was defeated, de Valera resigned from Sinn Féin; on 16 May 1926, he founded his own party, Fianna Fáil, which was dedicated to republicanising the Free State from within its political structures. He took most Sinn Féin TDs with him.
Rúaidhrí de Valera Rúaidhrí de Valera Rúaidhrí de Valera (3 November 1916 – 28 October 1978) was an Irish archaeologist most known for his work on the megalithic tombs of his country. He was the son of Éamon de Valera and Sinéad de Valera. De Valera took a Bachelor of Arts degree in Celtic studies from University College Dublin in 1939, before serving briefly in the Irish Army and then lecturing at the National University of Ireland at Maynooth for one year until 1943. He then studied for an MA in archaeology, writing his thesis on the prehistoric tombs of County Clare. In