| Regimental number | 14 |
| Religion | Presbyterian |
| Occupation | Motor mechanic |
| Address | Church Street, Parramatta, New South Wales |
| Marital status | Single |
| Age at embarkation | 23 |
| Next of kin | Father, William Finlayson, Church Street, Parramatta, New South Wales |
| Enlistment date | 19 April 1915 |
| Rank on enlistment | Private |
| Unit name | Light Horse Brigade 4, Ammunition Reserve |
| AWM Embarkation Roll number | 25/110/1 |
| Embarkation details | Unit embarked from Sydney, New South Wales, on board HMAT A44 Vestalia on 22 June 1915 |
| Regimental number from Nominal Roll | 8856 |
| Rank from Nominal Roll | Driver |
| Unit from Nominal Roll | 53rd Battalion |
| Fate | Returned to Australia 9 March 1919 |
| Family/military connections | Brothers: 3237 Pte Robert Barclay FINALYSON, 6th Light Horse Regiment, returned to Australia, 17 July 1919; 3236 Pte Samuel Barclay FINLAYSON, 6th Light Horse Regiment, returned to Australia, 28 January 1919. |
