| Regimental number | 22099 |
| Date of birth | 21 March 1894 |
| Place of birth | Semaphore, South Australia |
| School | Prince Alfred College, Adelaide, South Australia |
| Religion | Baptist |
| Occupation | Tailor |
| Address | Medindie, South Australia |
| Marital status | Single |
| Age at embarkation | 21 |
| Next of kin | Mother, Mrs E M Mellor, Lindley Avenue, Garden Road, Medindie, South Australia |
| Enlistment date | 6 September 1915 |
| Rank on enlistment | Sergeant |
| Unit name | Howitzer Brigade 23, Battery 108 |
| AWM Embarkation Roll number | 13/133/1 |
| Embarkation details | Unit embarked from Melbourne, Victoria, on board HMAT A7 Medic on 20 May 1916 |
| Rank from Nominal Roll | Corporal |
| Unit from Nominal Roll | 8th Field Artillery Brigade |
| Fate | Returned to Australia 20 December 1917 |
| Discharge date | 28 February 1918 |
| Family/military connections | Brothers: 39801 Gunner Robert Thornton MELLOR, 14th Field Artillery Brigade, returned to Australia, 8 July 1919; Major Thomas Reginald MELLOR, 5th Divisional Artillery, returned to Australia, 3 May 1919. |
| Other details | War service: France, Belgium. Wounded, Messines, Belgium, 12 July 1917; invalided to 1st and 2nd Southern General Hospital, Birmingham, England; invalided to Australia, 14 February 1918; discharged as medically unfit. |