| Regimental number | 6776 |
| Place of birth | Waverley, New South Wales |
| Religion | Church of England |
| Occupation | Musician |
| Address | Beatrice Street Lidcombe, Sydney, New South Wales |
| Marital status | Single |
| Age at embarkation | 20 |
| Next of kin | Father, Randolph Lassau, Beatrice Street, Lidcombe, Sydney, New South Wales |
| Enlistment date | |
| Rank on enlistment | Private |
| Unit name | 2nd Battalion, 22nd Reinforcement |
| AWM Embarkation Roll number | 23/19/3 |
| Embarkation details | Unit embarked from Sydney, New South Wales, on board HMAT SS Port Nicholson on |
| Rank from Nominal Roll | Private |
| Unit from Nominal Roll | 2nd Battalion |
| Fate | Killed in Action |
| Age at death from cemetery records | 22 |
| Place of burial | Heath Cemetery (Plot III, Row G, Grave No. 16), Harbonnieres, France |
| Panel number, Roll of Honour, Australian War Memorial | 33 |
| Miscellaneous information from cemetery records | Parents: Randolph and Emily LASSAU, Beatrice Street, Lidcombe, New South Wales |
| Other details |
War service: Western Front Medals: British War Medal, Victory Medal |