| Regimental number | 11/336 |
| Address | Eketahuna |
| Marital status | Single |
| Next of kin | Father, Thomas B Mason, Eketahuna |
| Rank on embarkation | Trooper |
| Enlistment status | Volunteer |
| Unit name | New Zealand Expeditionary Force, 9th Reinforcements, Wellington Mounted Rifles, B Squadron |
| Embarkation details | Unit embarked from Wellington on board SS Maunganui on |
| Miscellaneous details | Nominal Roll Vol. 1: Wellington Mounted Rifles/Main Body |