| Place of birth | Wycombe, England |
| Other Names | William Johnston |
| Religion | Presbyterian |
| Occupation | Minister |
| Address | Bathurst, New South Wales |
| Marital status | Widower |
| Age at embarkation | 47 |
| Next of kin | G Whalan, Lambert Street, Bathurst, New South Wales |
| Enlistment date | |
| Rank on enlistment | Chaplain (4th Class) |
| Unit name | Chaplains' Corps |
| Embarkation details | Unit embarked from Melbourne, Victoria, on board HMAT A39 Port Macquarie on |
| Rank from Nominal Roll | Chaplain, 3rd Class |
| Unit from Nominal Roll | Chaplains' Department |
| Fate | Died of wounds |
| Age at death from cemetery records | 49 |
| Place of burial | Brookwood Military Cemetery (Plot XI, Row B, Grave No 18), Surrey, England |
| Panel number, Roll of Honour, Australian War Memorial | 185 |
| Miscellaneous information from cemetery records | Name listed as William Johnstone STEVENS on Roll of Honour. Parents: William John and Susannah Marian STEVENS |
| Other details |
Medals: 1914-15 Star, British War Medal, Victory Medal |