| Regimental number | 6878 |
| Place of birth | Dapto, New South Wales |
| True Name | O'LEARY, William Leslie |
| Religion | Church of England |
| Occupation | Labourer |
| Address | Corrimal, New South Wales |
| Marital status | Single |
| Age at embarkation | 21 |
| Next of kin | Father, John O'Leary, Robertson, New South Wales |
| Enlistment date | |
| Place of enlistment | Wollongong, New South Wales |
| Rank on enlistment | Private |
| Unit name | 17th Battalion, 20th Reinforcement |
| AWM Embarkation Roll number | 23/34/4 |
| Embarkation details | Unit embarked from Sydney, New South Wales, on board HMAT A72 Beltana on |
| Rank from Nominal Roll | Sapper |
| Unit from Nominal Roll | 17th Battalion |
| Fate | Returned to Australia |
| Miscellaneous information from cemetery records | Photo: Andrew Richardson |
| Other details |
War service: Western Front Medals: British War Medal, Victory Medal Death attributed to War Service. |
| Date of death | |
| Age at death | 47 |
| Place of burial | Rookwood Necropolis, Sydney, New South Wales |
| Sources | NAA: B2455, WILLIAMS John |
