| Place of birth | Armagh, Ireland |
| Religion | Church of England |
| Occupation | Medical practitioner |
| Address | Middle Brighton, Victoria |
| Marital status | Single |
| Age at embarkation | 41 |
| Next of kin | Father, Dr R Gray, Armagh, Ireland |
| Enlistment date | 1 May 1915 |
| Rank on enlistment | Captain |
| Unit name | Convalescent Depot, Harefield Park, London |
| AWM Embarkation Roll number | 26/84/1 |
| Embarkation details | Unit embarked from Melbourne, Victoria, on board RMS Mooltan on 18 May 1915 |
| Rank from Nominal Roll | Major |
| Unit from Nominal Roll | Australian Army Medical Corps |
| Fate | Returned to Australia 7 February 1919 |
| Sources | NAA: B2455, GRAY Francis Audubon |
