
| Regimental number | 1127 |
| Place of birth | Bruce South Australia |
| Religion | Roman Catholic |
| Occupation | Labourer |
| Address | Bruce, South Australia |
| Marital status | Single |
| Age at embarkation | 21 |
| Next of kin | Mother, Mrs. K. O'Riley, Bruce, South Australia |
| Enlistment date | |
| Rank on enlistment | Private |
| Unit name | 3rd Light Horse Regiment, 7th Reinforcement |
| AWM Embarkation Roll number | 10/8/2 |
| Embarkation details | Unit embarked from Adelaide, South Australia, on board HMAT A61 Kanowna on |
| Rank from Nominal Roll | Private |
| Unit from Nominal Roll | 1st Light Horse Brigade Machine Gun Squadron |
| Fate | Returned to Australia |
| Family/military connections | Brothers: 5743 Pte Edward O'RILEY, 10th Bn, killed in action, 6 May 1917; 1886A Pte Thomas William O'RILEY, 5th Machine Gun Bn, returned to Australia, 5 July 1919. |
| Other details |
Medals: 1914-15 Star, British War Medal, Victory Medal |
| Date of death | |
| Age at death | 81 |
| Place of burial | Snowtown (Condowie) Cemetery, South Australia |