File Reference MSP34REF4158 Name Denis O'Callaghan Gender male Maiden/Other names Ó Ceallacháin, Donnchadh Address detail Street 85 [45] St. Jarlath's Road, Cabra, Dublin County Dublin Country Ireland Address detail Street Craddenstown, Raharney County Westmeath Country Ireland Date of birth 1882 Date of death 1945-04-15 Associated files in MSPA 34D756; DP4030; 1RB59;1RBA173; V609; Related files MSP34REF20537, Margaret O'Callaghan (née O'Flanagan) Easter rising service Yes Easter rising location/place Broadstone Railway Station, Constitution Hill, Phibsborough, Dublin Church Street, Dublin North Brunswick Street, Dublin Linenhall Barracks, Lisburn Street, Dublin Area of Four Courts, King's Inns Quay, Dublin Organisation Irish Volunteers Rank Lieutenant Unit 1 Battalion Company A Company Brigade Dublin Brigade Commanding Officer(s) Edward Daly Organisation Irish Volunteers Rank Staff Officer Division General Headquarters Commanding Officer(s) Michael Collins Pension Claim Yes Award Pension Yes Army Pensions Act No 1923/1953 Military Service Pensions No Acts 1924 Military Service Pensions Yes Acts 1934 Grade D Notes Awarded 5 and 1/2 years service for pension purposes Military Service Pensions No Acts 1949 Digital file Scanned/digital copyWMSP34REF4158DenisOCallaghan.pdf Scanned/digital copyW34D756DenisOCallaghan.pdf Scanned/digital copyW1RB59DenisOCallaghan.pdf Scanned/digital copyW1RBA173DenisOCallaghan.pdf Scanned/digital copyWDP4030DenisOCallaghan.pdf Scanned/digital copyWV609DenisOCallaghan.pdf File dates 20 November 1934 - 16 September 1983 Subject Information File relates to Donnchadh Ua Ceallacháin's (Denis O' Callaghan) receipt of a military service pension in respect of his service with the Irish Volunteers prior to and during the week of 23 to 29 April 1916, his imprisonment until 1917 and his subsequent service until 1919. Denis O' Callaghan was courtmartialled and sentenced to death, later commuted to 10 years penal servitude following the 1916 Easter Rising. Previous to Easter Week O' Callaghan had served as a Company Lieutenant and during the fighting served as officer in charge of barricades in the Church Street area and claims later to have been placed in charge of the Four Courts area after Frank Fahy had fallen ill. Following his release in 1917 Denis O' Callaghan undertook organisational work for the Irish Volunteers in County Kerry as well as election work for Sinn Fein in Armagh and Clare and served in the Intelligence Department, General Headquarter Irish Volunteers under E. J. Duggan. He also claimed unsuccessfully for service from 1919 to 1923 anf file also refers to activities with and membership of the Gaelic League, Gaelic Athletic Association (GAA) and IRB. File includes: signed handwritten and typed statements regarding O' Callaghan's service from Denis O' Callaghan, Seosaimh Ua Maoilfhinn, Daniel P. Walshe, Pádraig O Caoimh, M. Staines, E. J. Duggan, John McKeown, [ O' Donnell], Sean Hyde, Diarmuid O' Hegarty, Barney Mellows, Denis Daly, Frank Harding, P. Emmet MacSuibhne, Seamus Ó Ciardhubháin (James Kirwan), Michae; Kellagher, Joseph O' Reilly, James J. Mulkerns, James Fitzharris, Maria Gleeson and P. Holohan; typed transcript of sworn statements regarding O' Callaghan's service made before the Advisory Committee, Military Service Pensions Act, 1934 by Denis O' Callaghan (20 December 1935), Patrick Houlihan (22 June 1936) and P. Holohan (28 October 1936); material, including medical certificates, reports and examinations relating to Denis O' Callaghan's applications in 1933 and 1938 for a Disability Pension; and material relating to subject's widow, three (3) daughters and one (1) son - partly closed.