| Regimental number | 1009 |
| Place of birth | Ashfield New South Wales |
| Religion | Roman Catholic |
| Occupation | Electrician |
| Address | 'Winslow', Canterbury Road, Hurlstone Park, Sydney, New South Wales |
| Marital status | Single |
| Age at embarkation | 20 |
| Next of kin | Father, J O'Brien, 'Winslow', Canterbury Road, Hurlstone Park, Sydney, New South Wales |
| Enlistment date | 1 March 1915 |
| Date of enlistment from Nominal Roll | 9 March 1915 |
| Rank on enlistment | Lance Corporal |
| Unit name | Signal Troop 4 |
| AWM Embarkation Roll number | 22/22/1 |
| Embarkation details | Unit embarked from Sydney, New South Wales, on board HMAT A31 Ajana on 31 May 1915 |
| Rank from Nominal Roll | Sergeant |
| Unit from Nominal Roll | 4th Divisional Signal Company |
| Fate | Returned to Australia 11 May 1919 |
| Date of death | 7 February 1961 |
| Place of burial | Woronora Cemetery |
