| Regimental number | 2069 |
| Place of birth | Newcastle, New South Wales |
| Religion | Baptist |
| Occupation | Coal Trimmer |
| Address | Howden Street, Carrington, New South Wales |
| Marital status | Married |
| Age at embarkation | 27 |
| Next of kin | Wife, Mrs Minnie Galleghan, Little Denison Street, Carrington, New South Wales |
| Enlistment date | |
| Rank on enlistment | Private |
| Unit name | 34th Battalion, 3rd Reinforcement |
| AWM Embarkation Roll number | 23/51/2 |
| Embarkation details | Unit embarked from Sydney, New South Wales, on board HMAT A68 Anchises on |
| Rank from Nominal Roll | Private |
| Unit from Nominal Roll | 34th Battalion |
| Fate | Killed in Action |
| Age at death from cemetery records | 29 |
| Place of burial | Unicorn Cemetery (Plot IV, Row C, Grave No. 6), Vend'huile, France |
| Panel number, Roll of Honour, Australian War Memorial | 123 |
| Miscellaneous information from cemetery records | Parents: James and Janet GALLEGHAN; husband of Minnie GALLEGHAN, 34 Dillon Street, Paddington, New South Wales. Native of Cook's Hill, Newcastle, New South Wales |
| Family/military connections | Nephew: 432 Sergeant Frederick GALLEGHAN, 34th Bn, returned to Australia, 9 December 1918 [subsequently served in World War II: NX70416 Brigadier F.G. GALLEGHAN DSO, OBE, ISO, ED, 27th Infantry Brigade, discharged, 2 January 1946]; Cousin: 2180 Driver John WOODS, 34th Bn, killed in action, 13 October 1917. |
| Other details |
War service: Western Front Medals: British War Medal, Victory Medal |