| Regimental number | 640 |
| Place of birth | Rathdownie, Beaudesert, Queensland |
| Religion | Roman Catholic |
| Occupation | Policeman |
| Address | Rathdownie, Beaudesert, Queensland |
| Marital status | Single |
| Age at embarkation | 23 |
| Height | 5' 10.75" |
| Weight | 155 lbs |
| Next of kin | Father, James O'Brien, Rathdownie, Beaudesert, Queensland |
| Previous military service | Nil |
| Enlistment date | |
| Place of enlistment | Enoggera, Queensland |
| Rank on enlistment | Private |
| Unit name | 2nd Light Horse Regiment, 1st Reinforcement |
| AWM Embarkation Roll number | 10/7/2 |
| Embarkation details | Unit embarked from Sydney, New South Wales, on board HMAT A42 Boorara on |
| Rank from Nominal Roll | Private |
| Unit from Nominal Roll | 2nd Light Horse Regiment |
| Fate | Returned to Australia |
| Miscellaneous information from cemetery records | Parents: James and Dora O'BRIEN |
| Discharge date | |
| Other details |
War service: Egypt. Admitted to No 1 Australian General Hospital, 27 March 1915. Commenced returned to Australia on board HT 'Kyarra', 10 June 1915; discharged Brisbane (medically unfit: pyeletis and syphilis), 10 November 1915. Medals: 1914-15 Star, British War Medal, Victory Medal Death attributed to war service. |
| Date of death | |
| Age at death | 43 |
| Place of burial | Toowong Cemetery, Queensland |
| Sources | NAA: B2455, O'BRIEN William Buckley |
Postal Address:
Po Box 7916
Canberra BC 2610, Australia
Street Address:
Northcott Drive,
Campbell, ACT 2600
