| Date of birth | 16 March 1893 |
| Place of birth | Armidale, New South Wales |
| Religion | Church of England |
| Occupation | Soldier |
| Address | District Head Quarters, Perth, Western Australia |
| Marital status | Single |
| Age at embarkation | 21 |
| Next of kin | Father, John Selby, 49 Monger Street, West Leederville, Western Australia |
| Enlistment date | 17 August 1914 |
| Rank on enlistment | Lieutenant |
| Unit name | 11th Battalion, B Company |
| AWM Embarkation Roll number | 23/28/1 |
| Embarkation details | Unit embarked from Fremantle, Western Australia, on board HMAT A7 Medic on 31 October 1914 |
| Rank from Nominal Roll | Lieutenant |
| Unit from Nominal Roll | 11th Battalion |
| Fate | Returned to Australia 8 October 1915 |
| Family/military connections | Brother: 3224 Pte Samuel Vaughan SELBY, 48th Bn, killed in action, 12 October 1917. |
| Other details | Graduate of RMC Duntroon. |