| Regimental number | 1687 |
| Place of birth | Ross Scotland |
| Religion | Presbyterian |
| Occupation | Carpenter and joiner |
| Address | Prahran, Victoria |
| Marital status | Married |
| Age at embarkation | 37 |
| Next of kin | Wife, Mrs Margaret Mackay, 4 Bella Street, Prahran, Victoria |
| Enlistment date | |
| Rank on enlistment | Private |
| Unit name | 39th Battalion, 1st Reinforcement |
| AWM Embarkation Roll number | 23/56/2 |
| Embarkation details | Unit embarked from Melbourne, Victoria, on board HMAT A11 Ascanius on |
| Rank from Nominal Roll | Private |
| Unit from Nominal Roll | 7th Battalion |
| Fate | Died of wounds |
| Age at death from cemetery records | 39 |
| Place of burial | Ebblinghem Military Cemetery (Plot II, Row A, Grave No. I), France |
| Panel number, Roll of Honour, Australian War Memorial | 50 |
| Miscellaneous information from cemetery records | Son of Alexander MACKAY, Muir-of-Ord, ross-shire, Scotland; husband of Margaret Mackay, 8 West Adam Street, Edinburgh, Scotland |
| Other details |
War service: Western Front Medals: British War Medal, Victory Medal |