| Regimental number | 6564 |
| Place of birth | Tocumwal New South Wales |
| Religion | Church of England |
| Occupation | Clerk |
| Address | c/o Mrs D McIlwraith, Boston Road, Canterbury, Victoria |
| Marital status | Single |
| Age at embarkation | 28 |
| Next of kin | Sister, Mrs D McIlwraith, Boston Road, Canterbury, Victoria |
| Enlistment date | 3 September 1915 |
| Rank on enlistment | Gunner |
| Unit name | Field Artillery Brigade 4, Battery 11 |
| AWM Embarkation Roll number | 13/32/1 |
| Embarkation details | Unit embarked from Melbourne, Victoria, on board HMAT A18 Wiltshire on 18 November 1915 |
| Rank from Nominal Roll | Gunner |
| Unit from Nominal Roll | 4th Field Artillery Brigade |
| Fate | Returned to Australia 27 August 1917 |
| Family/military connections | Brother: 165 Bombardier Stanley Edward PENNEFATHER, 36th HAB, discharged, 13 October 1919. Sister: Sister Mary Elizabeth PENNEFATHER, Australian Army Nursing Service, discharged, 26 December 1918. |