| Regimental number | 3237 |
| Place of birth | Parramatta New South Wales |
| Religion | Presbyterian |
| Occupation | Clerk |
| Address | Church Street, Parramatta, New South Wales |
| Marital status | Single |
| Age at embarkation | 21 |
| Next of kin | Father, William Finlayson, Church Street, Parramatta, New South Wales |
| Enlistment date | |
| Date of enlistment from Nominal Roll | |
| Rank on enlistment | Private |
| Unit name | 6th Light Horse Regiment, 26th Reinforcement |
| AWM Embarkation Roll number | 10/11/4 |
| Embarkation details | Unit embarked from Melbourne, Victoria, on board HMAT A42 Boorara on |
| Rank from Nominal Roll | Private |
| Unit from Nominal Roll | 6th Light Horse Regiment |
| Fate | Returned to Australia |
| Family/military connections | Brothers: 14 Driver James FINALYSON, 53rd Bn, returned to Australia, 9 March 1919; 3236 Pte Samuel Barclay FINALYSON, 6th Light Horse Regiment, returned to Australia, 28 January 1919. |
| Other details |
War service: Western Front Medals: British War Medal, Victory Medal |