| Regimental number | 6978 |
| Place of birth | Tipperary, Ireland |
| Religion | Roman Catholic |
| Occupation | Motorman |
| Address | 55 Dandenong Road, Malvern, Victoria |
| Marital status | Married |
| Age at embarkation | 36 |
| Next of kin | Wife, Mrs E Costello, North Vancouver, British Columbia, Canada |
| Enlistment date | 23 October 1916 |
| Date of enlistment from Nominal Roll | 14 October 1916 |
| Place of enlistment | Melbourne, Victoria |
| Rank on enlistment | Private |
| Unit name | 7th Battalion, 23rd Reinforcement |
| AWM Embarkation Roll number | 23/24/4 |
| Embarkation details | Unit embarked from Melbourne, Victoria, on board HMAT A20 Hororata on 23 November 1916 |
| Rank from Nominal Roll | Private |
| Unit from Nominal Roll | 2nd Battalion |
| Fate | Returned to Australia 18 January 1919 |
| Sources | NAA: B2455, COSTELLO John |
