| Regimental number | 1820 |
| Religion | Roman Catholic |
| Occupation | Police constable |
| Address | Central Police Station, Roe Street, Perth, Western Australia |
| Marital status | Single |
| Age at embarkation | 28 |
| Next of kin | Father, John Costello, 22 Dumple Street, Scarborough, Yorkshire, England |
| Enlistment date | |
| Rank on enlistment | Gunner |
| Unit name | Field Artillery Brigade 3, Battery 8 |
| AWM Embarkation Roll number | 13/31/1 |
| Embarkation details | Unit embarked from Fremantle, Western Australia, on board Transport A7 Medic on |
| Rank from Nominal Roll | Gunner |
| Unit from Nominal Roll | Anzac Provost Corps |
| Fate | Returned to Australia |
| Other details |
Medals: 1914-15 Star, British War Medal, Victory Medal |