| Regimental number | 55768 |
| Occupation | Cabinetmaker |
| Next of kin | Father, J Mercer, 25 Miller Street, North East Valley, Dunedin |
| Rank on embarkation | Private |
| Unit name | New Zealand Expeditionary Force, 28th Reinforcements (Second Draft), Otago Infantry Regiment, D Company |
| Embarkation details | Unit embarked from Wellington on board HMNZT 90 Ulimaroa on |
| Final rank | Private |
| Final unit | 1st Battalion, Otago Infantry Regiment |
| Fate | Killed in Action |
| Place of burial | No known grave |
| Commemoration details | Buttes New British Cemetery (New Zealand) Memorial, Polygon Wood, Belgium |
| Miscellaneous information from cemetery records | Parents: Mr & Mrs Joseph Mercer, Dunedin |
| Other details |
War service: Western Front Medals: British War Medal, Victory Medal |
| Sources | Nominal Roll Vol. 3: Roll 69, p. 27 |