| Regimental number | 3778 |
| Place of birth | Toowoomba Queensland |
| Religion | Church of England |
| Occupation | Labourer |
| Address | c/o Schmidt, Ruthven Street, Toowoomba, Queensland |
| Marital status | Single |
| Age at embarkation | 20 |
| Next of kin | Father, T Jefferson c/o Schmidt, Ruthven Street, Toowoomba, Queensland |
| Enlistment date | 20 August 1915 |
| Rank on enlistment | Private |
| Unit name | 15th Battalion, 12th Reinforcement |
| AWM Embarkation Roll number | 23/32/2 |
| Embarkation details | Unit embarked from Sydney, New South Wales, on board HMAT A23 Suffolk on 30 November 1915 |
| Rank from Nominal Roll | Private |
| Unit from Nominal Roll | 1st Australian General Hospital |
| Fate | Returned to Australia 16 March 1918 |
| Miscellaneous details (Nominal Roll) | *Spelt Elliott Sylvester Jefferson on NR |
| Date of death | 4 October 1967 |
| Place of burial | Mt Gravatt Cemetery |