| Regimental number | 1569 |
| Place of birth | Leith, Scotland |
| Other training | Fireman |
| Age on arrival in Australia | 33 |
| Religion | Roman Catholic |
| Occupation | Marine fireman |
| Address | 45 Queen Street, Fremantle, Western Australia |
| Marital status | Married |
| Age at embarkation | 36 |
| Next of kin | Wife, Mrs Catherine O'Brien, 45 Blackscroft Street, Dundee, Scotland |
| Previous military service | Served in the Royal Navy. |
| Enlistment date | |
| Date of enlistment from Nominal Roll | |
| Rank on enlistment | Private |
| Unit name | 28th Battalion, 1st Reinforcement |
| AWM Embarkation Roll number | 23/45/2 |
| Embarkation details | Unit embarked from Fremantle, Western Australia, on board HMAT A2 Geelong on |
| Rank from Nominal Roll | Private |
| Unit from Nominal Roll | 28th Battalion |
| Fate | Died of wounds |
| Place of death or wounding | Somme, France |
| Age at death | 40 |
| Age at death from cemetery records | 38 |
| Panel number, Roll of Honour, Australian War Memorial | 114 |
| Miscellaneous information from cemetery records | Parents: John and Margaret O'BRIEN; husband of Catherine O'BRIEN, 21 Constable Street, Dundee, Scotland. Native of Leith |
| Family/military connections | Nil. |