| Regimental number | 1287 |
| Place of birth | Melbourne Victoria |
| Other Names | Geoffrey Mac Kinnon |
| Religion | Church of England |
| Occupation | Butter packer |
| Address | 'Wookey', Leongatha, Victoria |
| Marital status | Single |
| Age at embarkation | 21 |
| Next of kin | Mother, Mrs Kate Salmon, 'Wookey', Leongatha, Victoria |
| Enlistment date | 23 July 1915 |
| Rank on enlistment | Private |
| Unit name | 13th Light Horse Regiment, 6th Reinforcement |
| AWM Embarkation Roll number | 10/18/2 |
| Embarkation details | Unit embarked from Melbourne, Victoria, on board HMAT SS Hawkes Bay on 26 October 1915 |
| Regimental number from Nominal Roll | 1156 |
| Rank from Nominal Roll | Bombardier |
| Unit from Nominal Roll | 6th Field Artillery Brigade |
| Fate | Returned to Australia 27 April 1919 |
