| Regimental number | 1062 |
| Place of birth | Upper Manilla, New South Wales |
| School | Upper Manilla Public School and De La Salle (Catholic) College, Armidale, New South Wales |
| Religion | Roman Catholic |
| Occupation | Farmer |
| Address | Upper Manilla, New South Wales |
| Marital status | Single |
| Age at embarkation | 19 |
| Next of kin | Father, J T Byrnes, Upper Manilla, New South Wales |
| Previous military service | Nil |
| Enlistment date | |
| Rank on enlistment | Private |
| Unit name | 33rd Battalion, D Company |
| AWM Embarkation Roll number | 23/50/1 |
| Embarkation details | Unit embarked from Sydney, New South Wales, on board HMAT A74 Marathon on |
| Rank from Nominal Roll | Private |
| Unit from Nominal Roll | 33rd Battalion |
| Fate | Died of wounds |
| Place of death or wounding | Messines, Belgium |
| Age at death | 20.6 |
| Age at death from cemetery records | 20 |
| Place of burial | Trois-Arbres Cemetery (Plot I, Row S, Grave 14), Steenwerck, France |
| Panel number, Roll of Honour, Australian War Memorial | 121 |
| Miscellaneous information from cemetery records | Parents: James Thomas and Catherine BYRNES |
| Other details |
War service: Western Front Medals: British War Medal, Victory Medal |