EAMONN Bulfin was 24 when he served in the GPO during the Easter Rising.
He was subsequently interned until December 1916 and, after his release, became a vice-commandant of the Offaly Brigade of the Irish Volunteers.
Bulfin was then deported to England and from there to Argentina in May 1919.
Bulfin disagreed with the Treaty, closed down his mission to Argentina and returned to Ireland in June 1922. However, he took no part in the Civil War.
The files relating to Bulfin's pension application include a two-page letter that he wrote on February 10, 1936, to the Office of the Referee Military Service Pensions Act.
"When the Treaty was signed the members of the Mission... were dissatisfied and disgusted with the turn of events and with the instructions received from the Provisional Government. We decided to close down the Legation," he wrote.
The documents also include a two-page signed statement from Margaret M Pearse, the sister of Padraic Pearse, concerning Bulfin's deportation to Argentina by the British Government.