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
Anthony Coughlan set up in 1964 becoming acting as its secretary as well Dublin Housing Action Committees, both of which were heavily populated by members of the Republican Movement most of which evolved into Sinn Fein the Workers Party. The Wolfe Tone Society(WTS) campaigned for civil rights in Northern Ireland and supported the NICRA. Contributed articles to the "United Irishman" and "Tuairisc" the paper of the Wolfe Tone Society. He left the Republican Movement in 1970, he was joint secretary with Raymond Crotty of the "Common Market Defence Campaign", he participated in the "Common Market Study Group" and campaigned against Ireland joining