| Regimental number | 56450 |
| Occupation | Farmer |
| Next of kin | Father, Richard Mapp, Midhirst, Taranaki |
| Rank on embarkation | Rifleman |
| Unit name | New Zealand Expeditionary Force, New Zealand Rifle Brigade Reinforcements, G Company |
| Embarkation details | Unit embarked from Wellington on board HMNZT 92 Ruahine on |
| Family/military connections | Brothers: 42153 Pte Francis Herbert MAPP, New Zealand Infantry Reinforcements, died of disease, 25 May 1917; 34407 Pte Richard MAPP, 1st Bn, Auckland Infantry Regiment, died of disease, 30 April 1918. |
| Sources | Nominal Roll Vol. 3: Roll 70, p. 29 |