| Date of birth | |
| Place of birth | West Maitland New South Wales |
| Religion | Roman Catholic |
| Occupation | Clerk |
| Address | Charles Street, Newcastle, New South Wales |
| Marital status | Single |
| Age at embarkation | 24 |
| Next of kin | Father, Arthur O'Connor, Denbigh House, Charles Street, Newcastle, New South Wales |
| Enlistment date | |
| Rank on enlistment | Lieutenant |
| Unit name | Army Service Corps 20, Reinforcement 1 |
| AWM Embarkation Roll number | 25/106/2 |
| Embarkation details | Unit embarked from Sydney, New South Wales, on board HMAT A34 Persic on |
| Rank from Nominal Roll | Captain |
| Unit from Nominal Roll | 20th Company, Australian Army Service Corps |
| Promotions |
Captain Unit: 4th Division Train Promotion date: |
| Recommendations (Medals and Awards) |
Brevet Captain *Refers 17 September -11 November 1918. Recommendation date: Mention in Despatches* Awarded, and promulgated, 'London Gazette' No. 31448 (11 July 1919); 'Commonwealth Gazette' No. 124 (30 October 1919). |
| Fate | Returned to Australia |
| Other details |
Medals: 1914-15 Star, British War Medal, Victory Medal |