| Regimental number | 800 |
| Place of birth | Sydney, New South Wales |
| Religion | Church of England |
| Occupation | Clerk |
| Address | Blakehurse, Kogarah, near Sydney, New South Wales |
| Marital status | Single |
| Age at embarkation | 22 |
| Height | 5'8.25" |
| Weight | 151 lbs |
| Next of kin | Father, Ernest Giles Seymour, Blakehurse, Kogarah, near Sydney, New South Wales |
| Previous military service | Yes 38th Infantry 4 Leav CMF. 38. B Ex employ |
| Enlistment date | |
| Place of enlistment | Sydney, New South Wales |
| Rank on enlistment | Private |
| Unit name | Anzac Cyclist Battalion, Reinforcement 8 |
| AWM Embarkation Roll number | 12/1/3 |
| Embarkation details | Unit embarked from Sydney, New South Wales, on board HMAT A67 Orsova on |
| Rank from Nominal Roll | Private |
| Unit from Nominal Roll | 31st Battalion |
| Fate | Returned to Australia |
| Miscellaneous information from cemetery records | Parents: Ernest and Alice SEYMOUR |
| Discharge date | |
| Other details |
War service: Western Front Commenced return to Australia on board HT 'Karoola',6 May 1919; disembarked Sydney, 28 June 1919; discharged (medically unfit), Sydney, 23 November 1920. Medals: British War Medal, Victory Medal |
| Date of death | |
| Age at death | 35 |
| Place of burial | Fawkner Cemetery, Melbourne, Victoria |
| Sources | NAA: B2455, SEYMOUR Reginald Alan |