| Regimental number | 1777 |
| Place of birth | Glenrowan Victoria |
| Religion | Roman Catholic |
| Occupation | Blacksmith |
| Address | Hansonville, Victoria |
| Marital status | Single |
| Age at embarkation | 24 |
| Next of kin | Brother, Thomas O'Brien, Hansonville, Victoria |
| Enlistment date | |
| Date of enlistment from Nominal Roll | |
| Rank on enlistment | Private |
| Unit name | 24th Battalion, 2nd Reinforcement |
| AWM Embarkation Roll number | 23/41/2 |
| Embarkation details | Unit embarked from Melbourne, Victoria, on board HMAT A64 Demosthenes on |
| Regimental number from Nominal Roll | 8936 |
| Rank from Nominal Roll | Staff Sergeant |
| Unit from Nominal Roll | 2nd Division Train |
| Fate | Returned to Australia |
| Other details |
War service: Egypt, Gallipoli, Western Front 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
