| Place of birth | North Sydney, New South Wales |
| School | Fort Street MOdel Public School, Sydney, New South Wales |
| Religion | Church of England |
| Occupation | Accountant |
| Address | 46 McLaren Street, North Sydney, New South Wales |
| Marital status | Single |
| Age at embarkation | 32 |
| Next of kin | Mother, Mrs. E.H. Sheldon, McLaren Street, North Sydney, New South Wales |
| Previous military service | Served as Bombardier in Royal Australian Garrison Artillery (Volunteer) and Lt in Compulsoy Training, Wooloomooloo District, Sydney, NSW. |
| Enlistment date | |
| Rank on enlistment | 2nd Lieutenant |
| Unit name | 4th Battalion, H Company |
| AWM Embarkation Roll number | 23/21/1 |
| Embarkation details | Unit embarked from Sydney, New South Wales, on board Transport A14 Euripides on |
| Rank from Nominal Roll | Lieutenant |
| Unit from Nominal Roll | 4th Battalion |
| Fate | Killed in Action |
| Miscellaneous details (Nominal Roll) | *Given name Richard Thomas |
| Place of death or wounding | Lone Pine, Gallipoli |
| Date of death | |
| Age at death | 33 |
| Age at death from cemetery records | 33 |
| Place of burial | Johnstons Jolly Special Memorial No. 16, Gallipoli, Turkey |
| Panel number, Roll of Honour, Australian War Memorial | 42 |
| Miscellaneous information from cemetery records | Parents: John and Elizabeth SELDON, "Eulourie", 46 McLaren Street, North Sydney, New South Wales |
| Family/military connections | Brother in law: Lt R.G.F. McMahon, 4th Bn, mentioned in despatches, Gallipoli, MC Bullecourt; died of pneumonia/influenza, Belgium, February 1919. |
| Other details |
War service: Egypt, Gallipoli Medals: 1914-15 Star, British War Medal, Victory Medal |