| Regimental number | 1705 |
| Place of birth | Kingston Tasmania |
| Religion | Roman Catholic |
| Occupation | Labourer |
| Address | Tunnack, Tasmania |
| Marital status | Single |
| Age at embarkation | 20 |
| Next of kin | Father, Thomas Lucas O'Brien, Tunack, Tasmania |
| Enlistment date | |
| Rank on enlistment | Private |
| Unit name | 3rd Light Horse Regiment, 12th Reinforcement |
| AWM Embarkation Roll number | 10/8/3 |
| Embarkation details | Unit embarked from Melbourne, Victoria, on board HMAT A40 Ceramic on |
| Rank from Nominal Roll | Driver |
| Unit from Nominal Roll | 5th Divisional Ammunition Column |
| Fate | Returned to Australia |
Postal Address:
Po Box 7916
Canberra BC 2610, Australia
Street Address:
Northcott Drive,
Campbell, ACT 2600
