| Regimental number | 67673 |
| Place of birth | Adrossan, Scotland |
| School | St Marys (Catholic) School Salhcoats, Scotland |
| Age on arrival in Australia | 22 |
| Religion | Roman Catholic |
| Occupation | Labourer |
| Address | 136 Hereford Street, Forest Lodge, Sydney, New South Wales |
| Marital status | Single |
| Age at embarkation | 26 |
| Next of kin | Father, P McKay, Dock Gates, Ardrossan, Scotland |
| Enlistment date | |
| Date of enlistment from Nominal Roll | |
| Rank on enlistment | Private |
| Unit name | New South Wales Reinforcement 26 |
| AWM Embarkation Roll number | 23/111/6 |
| Embarkation details | Unit embarked from Sydney, New South Wales, on board HMAT A7 Medic on |
| Unit from Nominal Roll | 26 GS REINFTS |
| Place of death or wounding | Not Known (died of Broncho Pneumonia in Quarantine) |
| Date of death | |
| Age at death | 25 |
| Age at death from cemetery records | 26 |
| Place of burial | Quarantine Station, North Head |
| Panel number, Roll of Honour, Australian War Memorial | 185 |
| Miscellaneous information from cemetery records | Son of Patrick MCKAY. Native of Ayrshire, Scotland. Plaque in Garden of Remembrance, NSW. |