| Regimental number | 408 |
| Place of birth | Queensland |
| Religion | Presbyterian |
| Occupation | Tailor |
| Address | Endlo, Nc, Queensland |
| Marital status | Single |
| Age at embarkation | 20 |
| Next of kin | Father, T Jeffrey, Endlo, Nc, Queensland |
| Enlistment date | |
| Rank on enlistment | Private |
| Unit name | 25th Battalion B Company |
| AWM Embarkation Roll number | 23/42/1 |
| Embarkation details | Unit embarked from Brisbane, Queensland, on board HMAT A60 Aeneas on |
| Rank from Nominal Roll | Private |
| Unit from Nominal Roll | 25th Battalion |
| Fate | Killed in Action |
| Miscellaneous details (Nominal Roll) | *Stated to be William John Jeffrey on NR |
| Age at death from cemetery records | 22 |
| Place of burial | Bedford House Cemetery (Plot III, Row C, Grave No. 15), Enclosure No. 4, Zillebeke, Belgium |
| Panel number, Roll of Honour, Australian War Memorial | 105 |
| Miscellaneous information from cemetery records | Parents: T. and Annie JEFFREY |