| Regimental number | 3291 |
| Religion | Church of England |
| Occupation | Soldier |
| Address | Arncliffe, New South Wales |
| Marital status | Married |
| Age at embarkation | 41 |
| Next of kin | Wife, Mrs Minnie Louise De Wilde, Forrest Road, Arncliffe, New South Wales |
| Enlistment date | 16 February 1917 |
| Date of enlistment from Nominal Roll | 9 February 1917 |
| Rank on enlistment | Sergeant |
| Unit name | 35th Battalion, 8th Reinforcement |
| AWM Embarkation Roll number | 23/52/3 |
| Embarkation details | Unit embarked from Sydney, New South Wales, on board HMAT A28 Miltiades on 2 August 1917 |
| Rank from Nominal Roll | Sergeant |
| Unit from Nominal Roll | 35th Battalion |
| Fate | Returned to Australia 16 August 1919 |
| Miscellaneous details (Nominal Roll) | *Spelt William Swaffield De Wilde on NR |