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 until his return in 1933 to Ireland. Fianna Éireann survived the Civil war period intact, they had sided with the Republic. The organisation was decimated then, and further disintegration occurred in 1926 when Fianna Fáil was founded. Markievicz was a founder member of that party but she died in 1927. In 1930 Fianna got the use of the Hardwicke Hall in Dublin as a headquarters as George Plunkett was nominated by the IRA as Chief Scout. This was a nominal position and the organisation was run by the HQ staff. At this time, Fianna expanded in proportion to the rest