| Regimental number | 22 |
| Date of birth | |
| Place of birth | Tipperary Ireland |
| Religion | Roman Catholic |
| Occupation | Station hand |
| Marital status | Single |
| Age at embarkation | 21 |
| Next of kin | Father, Dudley Edward O'Byrne, 22 Devonshire Place, Brighton, Sussex, England |
| Enlistment date | |
| Rank on enlistment | Sergeant |
| Unit name | Mobile Veterinary Section 2 |
| AWM Embarkation Roll number | 27/2/1 |
| Embarkation details | Unit embarked from Melbourne, Victoria, on board HMAT A41 Bakara on |
| Regimental number from Nominal Roll | Commissioned |
| Rank from Nominal Roll | Quartermaster and Captain |
| Unit from Nominal Roll | Australian Army Veterinary Corps |
| Promotions |
QMR & HON LT Unit: VET Promotion date: QMR & HON CAPT Unit: VET Promotion date: |
| Fate | Returned to Australia |