Irish Republic the Third Dáil, and all future institutions arising from it, as illegal. (See Second Dáil). The anti-Treaty side was then defeated in the Civil War. Most militant opposition to the Free State came to an end on 24 May 1923 when Frank Aiken, chief-of-staff of the IRA issued the order to "dump arms" and Éamon de Valera issued his address to the "Legion of the Rearguard". Éamon de Valera continued as president of the Sinn Féin political party. In March 1926, Éamon de Valera, along with most anti-Treaty politicians, founded a new party called 'Fianna Fáil' and ended their boycott
Rúaidhrí de Valera died suddenly on 28 October 1978, while visiting the Fermanagh County Museum in Enniskillen. 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