| Regimental number | 858 |
| Place of birth | Taree, New South Wales |
| Religion | Methodist |
| Occupation | Blacksmith |
| Address | Victoria Street, Taree, New South Wales |
| Marital status | Single |
| Age at embarkation | 25 |
| Height | 5' 5.25" |
| Weight | 133 lbs |
| Next of kin | Father, Samuel Tomlin Lean, Victoria Street, Taree, New South Wales |
| Previous military service | Nil |
| Enlistment date | |
| Place of enlistment | Newcastle, New South Wales |
| Rank on enlistment | Private |
| Unit name | Australian Naval & Military Expeditionary Force, 4th Tropical Unit, D Company |
| Embarkation details | Unit embarked from Sydney, New South Wales, on board SS Te Apua on |
| Rank from Nominal Roll | Private |
| Unit from Nominal Roll | Australian Naval & Military Expeditionary Force |
| Fate | Returned to Australia |
| Discharge date | |
| Other details |
War service: Rabaul Medal: British War Medal |
| Sources | NAA: B2455, LEAN William John |