| Regimental number | 5381 |
| Place of birth | Maylands, South Australia |
| Religion | Baptist |
| Occupation | Policeman |
| Address | Port Adelaide Police Station, South Australia |
| Marital status | Single |
| Age at embarkation | 27.7 |
| Height | 5' 10" |
| Weight | 195 lbs |
| Next of kin | Sister, Miss Florence Mellowship, Craggielee, Springton, South Australia |
| Previous military service | Nil |
| Enlistment date | |
| Place of enlistment | Adelaide, South Australia |
| Rank on enlistment | Private |
| Unit name | 27th Battalion, 14th Reinforcement |
| AWM Embarkation Roll number | 23/44/4 |
| Embarkation details | Unit embarked from Adelaide, South Australia, on board HMAT A70 Ballarat on |
| Rank from Nominal Roll | Private |
| Unit from Nominal Roll | 27th Battalion |
| Fate | Died of wounds |
| Age at death from cemetery records | 28 |
| Place of burial | Grevillers British Cemetery (Plot III, Row D, Grave No. 10), France |
| Panel number, Roll of Honour, Australian War Memorial | 111 |
| Family/military connections | Brother: 1620 Driver Alexander Reginald MELLOWSHIP, 11th Field Artillery Brigade, returned to Australia, 5 April 1919. |
| Other details |
War service: Western Front Wounded in action, 3 May 1917 (multiple gun shot wounds). Died of wounds, 3rd Casualty Clearing Station, 5 May 1917. Medals: British War Medal, Victory Medal |
| Sources | NAA: B2455, MELLOWSHIP Herbert Lionel |