| Regimental number | 3684 |
| Place of birth | Nowra New South Wales |
| Religion | Church of England |
| Occupation | Labourer |
| Address | Murwillumbah, Tweed River, New South Wales |
| Marital status | Married |
| Age at embarkation | 45 |
| Next of kin | Wife, Mrs Alice Sinclair, Murwillumbah, Tweed River, New South Wales |
| Enlistment date | 29 May 1917 |
| Rank on enlistment | Private |
| Unit name | 47th Battalion, 10th Reinforcement |
| AWM Embarkation Roll number | 23/64/3 |
| Embarkation details | Unit embarked from Sydney, New South Wales, on board HMAT A28 Miltiades on 2 August 1917 |
| Rank from Nominal Roll | Private |
| Unit from Nominal Roll | 42nd Battalion |
| Fate | Returned to Australia 7 June 1918 |
| Family/military connections | Sons: No2169 Robert Francis Sinclair, 13th Battalion, who was killed in action at Gallipoli on 21 August 1915, and two other unspecified sons who probably returned to Australia. |