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.
Éamon de Valera Prime Minister of His Majesty's Government in the Irish Free State, wrote in July 1936 to King Edward VIII in London indicating that he planned to introduce a new constitution, the central part of which was to be the creation of an office de Valera provisionally intended to call "President of Saorstát Éireann" (Uachtarán Shaorstát Éireann), which would replace the governorship-general. De Valera used the sudden abdication of Edward VIII as King to pass two bills: one amended the constitution to remove all mention of the monarch and Governor-General, while the second brought the monarch back, this time through statute