| Date of birth | |
| Place of birth | Semaphore South Australia |
| Religion | Baptist |
| Occupation | Barrister |
| Address | Avenel Gardens, Medindi, South Australia |
| Marital status | Single |
| Age at embarkation | 22 |
| Next of kin | Mother, Mrs E M Mellor, Avenel Gardens, Medindi, South Australia |
| Previous military service | 34th Battery Australian Field Artillery |
| Enlistment date | |
| Rank on enlistment | Lieutenant |
| Unit name | Field Artillery Brigade 2, Reinforcement 7 |
| AWM Embarkation Roll number | 13/30/2 |
| Embarkation details | Unit embarked from Melbourne, Victoria, on board HMAT RMS Persia on |
| Rank from Nominal Roll | Major |
| Unit from Nominal Roll | 5th Division Artillery |
| Promotions |
Captain Unit: 5th Division Artillery Promotion date: |
| Recommendations (Medals and Awards) |
Mention in Despatches Awarded, and promulgated, 'London Gazette' No. 30706 (28 May 1918); 'Commonwealth Gazette' No. 165 (24 October 1918). Mention in Despatches Awarded, and promulgated, 'London Gazette' No. 31448 (11 July 1919); 'Commonwealth Gazette' No. 124 (30 October 1919). |
| Fate | Returned to Australia |
| Medals |
OBE Source: 'Commonwealth Gazette' No. 109 Date: |
| Family/military connections | Brothers: 39801 Gunner Robert Thornton MELLOR, 14th Field Artillery Brigade, returned to Australia, 8 July 1919; 22099 Corporal Kenneth James MELLOR, 8th Field Artillery Brigade, returned to Australia, 20 December 1917. |
| Other details | Medals: Order of the British Empire, 1914-15 Star, British War Medal, Victory Medal |