| Regimental number | 19617 |
| Occupation | Bushman |
| Next of kin | Father, John Callaghan, Raukokore, Bay of Plenty |
| Rank on embarkation | Private |
| Unit name | New Zealand Expeditionary Force, Maori Contingent, 17th Reinforcements |
| Embarkation details | Unit embarked from Wellington on board HMNZT 84 Turakina on |
| Family/military connections | Brother: 12/3955 James CALLAGHAN |
| Sources | Nominal Roll Vol. 3: Roll 62, p. 38 |