| Regimental number | 3172 |
| Date of birth | |
| Place of birth | Quorn, South Australia |
| Religion | Presbyterian |
| Occupation | Saddler |
| Address | 51 Third Avenue, St Peter's, South Australia |
| Marital status | Single |
| Age at embarkation | 24 |
| Next of kin | Mother, Mrs Caroline Amelia Gregor, Quorn, South Australia |
| Enlistment date | |
| Rank on enlistment | Private |
| Unit name | 9th Light Horse Regiment, 25th Reinforcement |
| AWM Embarkation Roll number | 10/14/5 |
| Embarkation details | Unit embarked from Adelaide, South Australia, on board RMS Karmala on |
| Rank from Nominal Roll | Private |
| Unit from Nominal Roll | 9th Light Horse Regiment |
| Fate | Returned to Australia |
| Miscellaneous information from cemetery records | Listed on Quorn Primary School Roll of Honour, Quorn, South Australia. Photo: Peter Dennis. |
| Family/military connections | Brother: 1685 Pte Ernest Henry GREGOR, 50th Bn, killed in action, 16 August 1916. |
| Other details | Medals: British War Medal, Victory Medal |
| Date of death | |
| Age at death | 82 |
| Place of burial | Centennial Park Cemetery, Adelaide, South Australia |
| Sources | NAA: B2455, GREGOR William Charles |