
| Religion | Church of England |
| Occupation | Clerk |
| Address | Rosemount, Wallace Street, West Kogarah, New South Wales |
| Marital status | Single |
| Age at embarkation | 23 |
| Next of kin | Mother, Mrs Elizabeth Amelia O'Donnell, Rosemount Wallace Street, West Kogarah, New South Wales |
| Enlistment date | |
| Rank on enlistment | Lieutenant |
| Unit name | 18th Battalion, Headquarters |
| AWM Embarkation Roll number | 23/35/1 |
| Embarkation details | Unit embarked from s, New South Wales, on board TRANSPORT A40 Ceramic on |
| Rank from Nominal Roll | Captain |
| Unit from Nominal Roll | 18th Battalion |
| Fate | Returned to Australia |
| Family/military connections | Brothers: 288 Pte Harold Gordon O'DONNELL, 5th Company, Machine Gun Corps, died of wounds, 21 June 1917; 3586 Pte Alexander Thomas O'DONNELL, 54th Bn, killed in action, 20 July 1916. |
| Other details |
Medals: 1914-15 Star, British War Medal, Victory Medal |