| Regimental number | 2030 |
| Place of birth | Geelong, Victoria |
| Religion | Church of England |
| Occupation | Seaman |
| Address | 205 Bridge Road, Richmond, Victoria |
| Marital status | Single |
| Age at embarkation | 21 |
| Next of kin | Father, John Blackney, 69 Home Road, Newport, Victoria |
| Enlistment date | 11 February 1916 |
| Rank on enlistment | Private |
| Unit name | 60th Battalion, 3rd Reinforcement |
| AWM Embarkation Roll number | 23/77/3 |
| Embarkation details | Unit embarked from Melbourne, Victoria, on board HMAT A17 Port Lincoln on 4 May 1916 |
| Rank from Nominal Roll | Private |
| Unit from Nominal Roll | 60th Battalion |
| Fate | Returned to Australia 17 August 1916 |
| Family/military connections | Brother: 28 Pte William John BLACKNEY, 7th Bn, died of wounds, 25 December 1916. |