Leader of Sinn Féin joined opposing sides with De Valera leading the Anti-Treaty faction, while Griffith joined the Pro-Treaty faction, which later became Cumann na nGaedheal. De Valera’ successor John J. O'Kelly was one of four leaders who served for brief periods of time as Sinn Féin’s party membership declined in favour of Fianna Fáil and Fine Gael. In 1937, Margaret Buckley became the first female President of Sinn Féin. During her thirteen years as leader, she vastly improved the relations between the IRA and the party. She was succeeded by Paddy McLogan and Tomás Ó Dubhghaill who both helped rebuild party support in
Fianna Éireann Fianna Éireann Na Fianna Éireann (The Fianna of Ireland), known as the Fianna, is an Irish nationalist youth organisation founded by Bulmer Hobson and Constance Markievicz in 1909. Fianna members were involved in the setting up of the armed nationalist body the Irish Volunteers, and had their own circle of the Irish Republican Brotherhood (IRB). They took part in the 1914 Howth gun-running and (as Volunteer members) in the 1916 Easter Rising. They were active in the War of Independence and took the anti-Treaty side in the Civil War. The Fianna were declared an illegal organisation by the government of