| Regimental number | 2725 |
| Place of birth | Hobart Tasmania |
| Religion | Presbyterian |
| Occupation | Grazier |
| Address | Mathoura, New South Wales |
| Marital status | Single |
| Age at embarkation | 44 |
| Next of kin | Brother, Donald John Sinclair, Auchenreir PO, Auchenreir, New South Wales |
| Enlistment date | 5 July 1916 |
| Date of enlistment from Nominal Roll | 7 June 1916 |
| Rank on enlistment | Private |
| Unit name | 58th Battalion, 6th Reinforcement |
| AWM Embarkation Roll number | 23/75/4 |
| Embarkation details | Unit embarked from Melbourne, Victoria, on board HMAT A71 Nestor on 2 October 1916 |
| Rank from Nominal Roll | Private |
| Unit from Nominal Roll | Australian Army Veterinary Hospital |
| Fate | Returned to Australia 8 November 1918 |
