| Regimental number | 321 |
| Religion | Roman Catholic |
| Occupation | Farmer |
| Address | Bungeet PO, Victoria |
| Marital status | Single |
| Age at embarkation | 27 |
| Next of kin | Brother, Joseph O'Toole, Symons Street, Queenscliff, Victoria |
| Enlistment date | 20 August 1914 |
| Rank on enlistment | Private |
| Unit name | 4th Light Horse Regiment, B Squadron |
| AWM Embarkation Roll number | 10/9/1 |
| Embarkation details | Unit embarked from Melbourne, Victoria, on board Transport A18 Wiltshire on 19 October 1914 |
| Rank from Nominal Roll | Lance Corporal |
| Unit from Nominal Roll | 58th Battalion |
| Fate | Returned to Australia 3 December 1918 |
| Miscellaneous details (Nominal Roll) | *Spelt William Edmund O'Toole on NR |
| Date of death | 19 December 1949 |
| Place of burial | Carlton Cemetery |
