| Regimental number | 968 |
| Place of birth | Carlton Victoria |
| Religion | Presbyterian |
| Occupation | Farmer |
| Address | Harkaway, Victoria |
| Marital status | Single |
| Age at embarkation | 18 |
| Next of kin | David Irwin, Harkaway, Victoria |
| Enlistment date | 3 March 1915 |
| Rank on enlistment | Private |
| Unit name | 8th Light Horse Regiment, 6th Reinforcement |
| AWM Embarkation Roll number | 10/13/2 |
| Embarkation details | Unit embarked from Melbourne, Victoria, on board HMAT A66 Uganda on 21 June 1915 |
| Rank from Nominal Roll | Private |
| Unit from Nominal Roll | 8th Light Horse Regiment |
| Fate | Returned to Australia 8 February 1916 |
| Miscellaneous details (Nominal Roll) | *Stated to be Walter Gray Irwin on NR |
| Family/military connections | Brother: 967 Pte Horace Nash IRWIN, 8th Light Horse Brigade, returned to Australia, 3 July 1919. |
