| Regimental number | 1159 |
| Date of birth | |
| Place of birth | Abyglassyn, New South Wales |
| School | Abyglassyn State School, New South Wales |
| Religion | Roman Catholic |
| Occupation | Labourer |
| Address | Carrington Street, West Maitland, New South Wales |
| Marital status | Married |
| Age at embarkation | 27.10 |
| Next of kin | Wife, Mrs P J O'Brien, Carrington Street, West Maitland, New South Wales |
| Previous military service | Nil |
| Enlistment date | |
| Date of enlistment from Nominal Roll | |
| Rank on enlistment | Private |
| Unit name | 3rd Battalion F Company |
| AWM Embarkation Roll number | 23/20/1 |
| Embarkation details | Unit embarked from Sydney, New South Wales, on board HMAT A14 Euripides on |
| Unit from Nominal Roll | 3rd Battalion |
| Other details from Roll of Honour Circular | Chiefly associated with Maitland, NSW. |
| Fate | Killed in Action |
| Place of death or wounding | Gallipoli, Turkey |
| Age at death | 29 |
| Age at death from cemetery records | 28 |
| Place of burial | 4th Battalion Parade Ground Cemetery (Row A, Grave No. 12), Gallipoli, Turkey |
| Panel number, Roll of Honour, Australian War Memorial | 37 |
| Miscellaneous information from cemetery records | Parents: Patrick and Mary O'BRIEN, Maitland, New South Wales; Wife: Ellen Regis O'BRIEN |
| Other details |
War service: Egypt, Gallipoli Medals: 1914-15 Star, British War Medal, Victory Medal |
Postal Address:
Po Box 7916
Canberra BC 2610, Australia
Street Address:
Northcott Drive,
Campbell, ACT 2600
