File 1 - Breen, Sean

Maurice ‘Moss’ Twomey was born in Fermoy, County Cork, on 10 June in 1897. He was educated by the local Christian Brothers. He joined the Irish Volunteers on its formation in 1914 and proved to be an able recruit. He quickly rose to the rank of Battalion Adjutant Fermoy Battalion by 1918. By 1919, he had attained the rank of Brigade Adjutant to the Cork No. 2 Brigade of the Irish Republican Army (IRA). By 1920, Twomey was a staff officer on the general staff of the 1st Southern Division. He was heavily involved in operations during the War of Independence.

After the Anglo-Irish Treaty and during the Civil War, Twomey was a staff officer to General Liam Lynch. He was a member of the occupying force in the Four Courts in 1922, the action that precipitated the Civil War. He had however left the building before it was bombarded by the Free State Army.

Following the Civil War, Twomey was tasked with the entire root and branch reorganisation of the IRA, including the West Clare Brigade. Twomey succeeded Frank Aiken as Chief of Staff of the IRA in 1927, a post he would hold until 1936, when he was interned by the De Valera Government. While incarcerated in the Curragh Camp, Twomey argued with the IRA leadership concerning its policy of supporting Nazi Germany and resigned his position as Chief of Staff. Upon his release, Twomey left the IRA but remained sympathetic to the Republican cause. He subsequently opened a general confectioners and newsagents in Dublin, which became a centre for Republican activities. Maurice Twomey died in Dublin of a heart attack on 8 October 1978.