| Regimental number | 16662 |
| Other Names | HENNESSY |
| Religion | Church of England |
| Occupation | Electrician |
| Address | Sydney, New South Wales |
| Marital status | Single |
| Age at embarkation | 21 |
| Next of kin | Father, Robert Hennessey, Ethel Street, Randwick, Sydney, New South Wales |
| Enlistment date | 23 October 1916 |
| Date of enlistment from Nominal Roll | 6 October 1916 |
| Rank on enlistment | Driver |
| Unit name | December 1916 Reinforcements |
| AWM Embarkation Roll number | 14/42/2 |
| Embarkation details | Unit embarked from Sydney, New South Wales, on board HMAT A67 Orsova on 2 December 1916 |
| Rank from Nominal Roll | Sapper |
| Unit from Nominal Roll | Australian Electrical & Mechanical Mining Company |
| Fate | Returned to Australia 16 June 1919 |
