Seán Lemass Irish Free State, the legitimacy of the Dáil, and its abstentionist policy of refusing to sit in the Dáil, if elected. However, the effort was unsuccessful and in March 1926, however, de Valera, along with Lemass, resigned from the party. At this point, de Valera contemplated leaving public life, a decision that would have changed the course of Irish history. It was Lemass who encouraged him to stay and form a political party. In May, de Valera, assisted by Gerald Boland and Lemass, began to plan a new party. This new party became known as Fianna Fáil – The Republican
Éamon de Valera the IRA dumped their arms rather than surrender them or continue a now fruitless war, de Valera returned to political methods. In 1924, he was arrested in Newry for "illegally entering Northern Ireland" and held in solitary confinement for a month in Crumlin Road Gaol, Belfast. During this time, de Valera came to believe that abstentionism was not a workable tactic in the long term. He now believed that a better course would be to try to gain power and turn the Free State from a constitutional monarchy into a republic. He tried to convince Sinn Féin to accept this