| Regimental number | 6771 |
| Place of birth | Enniskillen, Ireland |
| Religion | Roman Catholic |
| Occupation | Jeweller |
| Address | 36A Oxford Street, Darlinghurst, New South Wales |
| Marital status | Single |
| Age at embarkation | 36.6 |
| Height | 5' 7.5" |
| Weight | 168 lbs |
| Next of kin | Friend, Mr E F Murphy, 89 Market Street, Sydney, New South Wales |
| Previous military service | Served in the Royal Garrison Artillery, United Kingdom |
| Enlistment date | |
| Place of enlistment | Sydney, New South Wales |
| Rank on enlistment | Private |
| Unit name | 4th Battalion, 22nd Reinforcement |
| AWM Embarkation Roll number | 23/21/4 |
| Embarkation details | Unit embarked from Sydney, New South Wales, on board SS Port Nicholson on |
| Rank from Nominal Roll | Private |
| Unit from Nominal Roll | 4th Battalion |
| Fate | Returned to Australia |
| Miscellaneous information from cemetery records | Photo: Robert and Sandra Crofts |
| Discharge date | |
| Other details |
War service: England Commenced return to Australia on board Ht 'Persic', 21 December 1917; discharged (medically unfit: chronic bronchitis, age), Sydney, 25 May 1918. Medal: British War Medal |
| Date of death | |
| Age at death | 49 |
| Place of burial | Rookwood Necropolis (Sec. R.C. 9, 2320), Sydney, New South Wales |
| Sources | NAA: B2455, O'BRIEN John |
