| Regimental number | 7/1073 |
| Address | Motueka |
| Marital status | Single |
| Next of kin | Father, Edward Grooby, Motueka, Nelson |
| Rank on embarkation | Trooper |
| Enlistment status | Volunteer |
| Unit name | New Zealand Expeditionary Force, 5th Reinforcements, Canterbury Mounted Rifles |
| Embarkation details | Unit embarked from Wellington on board Tahiti on |
| Family/military connections | Brothers: 58408 Trooper Laurence Robert GROOBY, Canterbury Mounted Rifles Regiment, killed in action, 27 October 1918; 68405 Private Llewellyn Gilbert GROOBY, 1st Battalion, Canterbury Infantry Regiment, died of wounds, 9 January 1919. |
| Miscellaneous details | Nominal Roll Vol. 1: Canterbury Mounted Rifles/Fifth |