Margaret Pearse defeated at the 1922 general election. She supported those who opposed the Treaty during the Irish Civil War and continued to be a member of Sinn Féin until 1926. In 1926 she left the party conference with Éamon de Valera and became a founder member of Fianna Fáil. She never stood for election again. Her daughter Margaret Mary Pearse also joined Fianna Fáil, and served as a TD from 1933 to 1937 and later served in Seanad Éireann as a Senator from 1938 until her death in 1968. At the launch of "The Irish Press" newspaper Margaret was asked to
Sinn Féin Bank founding council comprised George W. Russell, Arthur Griffith, and P. T. Daly. In 1910 it purchased headquarters at 6 Harcourt Street for £575, leasing the upper floors to the Sinn Féin party, from where the "Sinn Féin" newspaper was edited. A contemporary wrote, "we do not envy the man who has the job of persuading [nationalists] that the new Sinn Fein bank (which we take it will be established without complying with the requirements of British law) is a secure nest for his savings as the Bank of Ireland". When the First Dáil proclaimed an Irish Republic in 1919, it