| Regimental number | 2013 |
| Place of birth | Prospect South Australia |
| Religion | Church of Christ |
| Occupation | Traveller |
| Address | Northcote Terrace, North Gilberton, South Australia |
| Marital status | Single |
| Age at embarkation | 21 |
| Next of kin | Mother, Mrs Elizabeth Annie Winner, Northcote Terrace, North Gilberton, South Australia |
| Enlistment date | |
| Rank on enlistment | Private |
| Unit name | 50th Battalion, 3rd Reinforcement |
| AWM Embarkation Roll number | 23/67/3 |
| Embarkation details | Unit embarked from Adelaide, South Australia, on board HMAT A48 Seang Bee on |
| Regimental number from Nominal Roll | 2013A |
| Rank from Nominal Roll | Private |
| Unit from Nominal Roll | 50th Battalion |
| Fate | Killed in Action |
| Miscellaneous details (Nominal Roll) | Mervyn spelt Meryny on Nominal Roll. |
| Age at death from cemetery records | 22 |
| Place of burial | Noreuil Australian Cemetery, France |
| Commemoration details | Special Memorial (Row C, Plaque No. 15), Noreuil Australian Cemetery, France |
| Panel number, Roll of Honour, Australian War Memorial | 151 |
| Miscellaneous information from cemetery records | Commemorated in North Road Church of England Cemetery, Adelaide, South Australia. |
| Family/military connections | Brother: 2012 Lt Ernest Arthur WINNER, 50th Bn, effective abroad. |
| Other details |
War service: Western Front Medals: British War Medal, Victory Medal |