| Regimental number | 6188 |
| Place of birth | Rockhampton, Queensland |
| School | Longreach State and Longreach Presentation Convent (Catholic) |
| Religion | Presbyterian |
| Occupation | Overseer |
| Address | Longreach, Queensland |
| Marital status | Single |
| Age at embarkation | 25 |
| Next of kin | Father, John A Gavin, Longreach, Queensland |
| Previous military service | Nil |
| Enlistment date | |
| Place of enlistment | Longreach, Queensland |
| Rank on enlistment | Private |
| Unit name | 26th Battalion, 17th Reinforcement |
| AWM Embarkation Roll number | 23/43/4 |
| Embarkation details | Unit embarked from Brisbane, Queensland, on board HMAT A75 Marathon on |
| Rank from Nominal Roll | Private |
| Unit from Nominal Roll | 26th Battalion |
| Fate | Killed in Action |
| Miscellaneous details (Nominal Roll) | *Stated to be Gavin Gordon Gavin on NR |
| Place of death or wounding | Zonnebeke, Belgium |
| Age at death | 25 |
| Age at death from cemetery records | 25 |
| Place of burial | Ypres Reservoir Cemetery (Plot VII, Row B, Grave No. 1A), Belgium |
| Panel number, Roll of Honour, Australian War Memorial | 107 |
| Miscellaneous information from cemetery records | Parents: John and Rose GAVIN, (nee Le Poer), Bulkeley House, Longreach, Queensland |
| Family/military connections | Brother: 6191 Lance Corporal James Tinnock Bulkeley GAVIN, 26th Bn, killed in action, 4 October 1917. |
| Other details |
War service: Western Front Medals: British War Medal, Victory Medal |
| Sources | NAA: B2455, GAVIN Gordon Bulkely |