| Regimental number | 4/446 |
| Address | Dunedin |
| Marital status | Single |
| Next of kin | Father, J Tonkin, 34 Pine Hill Terrace, North East Valley, Dunedin |
| Rank on embarkation | Sapper |
| Enlistment status | Volunteer |
| Unit name | New Zealand Expeditionary Force, Main Body, New Zealand Field Engineers |
| Embarkation details | Unit embarked from Wellington on board Maunganui on |
| Final rank | Sapper |
| Final unit | New Zealand Engineers |
| Fate | Killed in Action |
| Age at death from cemetery records | 22 |
| Place of burial | No known grave |
| Commemoration details | Chunuk Bair (New Zealand) Memorial (Panel No 8), Gallipoli, Turkey |
| Miscellaneous information from cemetery records | Parents: J.H. and P.F.E. Tonkin, 34 Pine Hill Terrace, Dunedin |
| Other details |
War service: Egypt, Gallipoli Medals: 1914-15 Star, British War Medal, Victory Medal |
| Miscellaneous details | Nominal Roll Vol. 1: Field Engineers/Main Body |