
| Regimental number | 69 |
| Place of birth | Melbourne, Victoria |
| School | State School, Broadford, Victoria |
| Religion | Church of England |
| Occupation | Labourer |
| Address | Collins Street, Kiama, New South Wales |
| Marital status | Single |
| Age at embarkation | 22.9 |
| Height | 5' 7.5" |
| Weight | 154 lbs |
| Next of kin | Father, John Longstaff, Collins Street, Kiama, New South Wales |
| Previous military service | Served for 1 year in St George Rifles, Citizen Military Forces. |
| Enlistment date | |
| Place of enlistment | Randwick, New South Wales |
| Rank on enlistment | Private |
| Unit name | 2nd Battalion, A Company |
| AWM Embarkation Roll number | 23/19/1 |
| Embarkation details | Unit embarked from Sydney, New South Wales, on board HMAT A23 Suffolk on |
| Rank from Nominal Roll | Private |
| Unit from Nominal Roll | 2nd Battalion |
| Fate | Killed in Action |
| Place of death or wounding | Gallipoli, Turkey |
| Date of death | |
| Age at death | 24 |
| Age at death from cemetery records | 23 |
| Place of burial | Lone Pine Cemetery (Special Memorial C.49), Gallipoli, Turkey |
| Panel number, Roll of Honour, Australian War Memorial | 33 |
| Miscellaneous information from cemetery records | Parents: John and Marian LONGSTAFF, Collins Street, Kiama, New South Wales. Native of Melbourne, Victoria |
| Family/military connections | Brother: 640 Pte Richard John LONGSTAFF, 13th Bn, killed in action, 24 May 1915. |
| Other details |
War service: Egypt, Gallipoli Embarked Alexandria to join the Mediterranean Expeditionary Force (Gallipoli Campaign), 5 April 1915. Reported wounded and missing, 8 August 1915. Court of Enquiry (shipboard), 24 March 1916, concluded: 'Killed in action, 8 August 1915.' Medals: 1914-15 Star, British War Medal, Victory Medal |
| Sources | NAA: B2455, LONGSTAFF William David |