| Regimental number | 1258 |
| Religion | Roman Catholic |
| Occupation | Tinsmith and blacksmith |
| Address | Snk |
| Marital status | Single |
| Age at embarkation | 20 |
| Next of kin | Father, Con. O'Brien, 20 Michael Street, New Ross, County Wexford, Ireland |
| Enlistment date | |
| Date of enlistment from Nominal Roll | |
| Rank on enlistment | Private |
| Unit name | 7th Light Horse Regiment, 9th Reinforcement |
| AWM Embarkation Roll number | 10/12/2 |
| Embarkation details | Unit embarked from Sydney, New South Wales, on board HMAT A8 Argyllshire on |
| Rank from Nominal Roll | Driver |
| Unit from Nominal Roll | 1st Signal Squadron |
| Fate | Returned to Australia |
Postal Address:
Po Box 7916
Canberra BC 2610, Australia
Street Address:
Northcott Drive,
Campbell, ACT 2600
