| Regimental number | 2257 |
| Place of birth | Myrtleford, Victoria |
| School | Castlereagh St Public School, Sydney, New South Wales |
| Religion | Church of England |
| Occupation | Saddler |
| Address | Manly, New South Wales |
| Marital status | Single |
| Age at embarkation | 30 |
| Next of kin | Mother, Mrs Emily Ann Brentnall, Mona Vale, Manly, New South Wales |
| Previous military service | Nil |
| Enlistment date | |
| Date of enlistment from Nominal Roll | |
| Rank on enlistment | Private |
| Unit name | 54th Battalion, 4th Reinforcement |
| AWM Embarkation Roll number | 23/71/3 |
| Embarkation details | Unit embarked from Sydney, New South Wales, on board HMAT A42 Boorara on |
| Rank from Nominal Roll | Lance Sergeant |
| Unit from Nominal Roll | 54th Battalion |
| Fate | Died of wounds |
| Place of death or wounding | Rouen, France |
| Age at death | 32 |
| Age at death from cemetery records | 32 |
| Place of burial | St. Sever Cemetery Extension (Block Q, Plot IV, Row B, Grave No. 4), Rouen, France |
| Panel number, Roll of Honour, Australian War Memorial | 158 |
| Miscellaneous information from cemetery records | Parents: William and Emily BRENTNALL, Wetherill Street, Narrabeen, New South Wales. Native of Sydney, New South Wales |
| Family/military connections | Brother: 4572 Charles Frederick BRENTNALL, 23rd Machine Gun Company, killed in action, Zonnebeke, Belgium, 5 October 1917 Cousin (1st) Lieutenant Charles CARTHEW, 8th Light Horse, killed in action, Walker's Ridge, Gallipoli, 7 August 1915. |
| Other details |
War service: Western Front Medals: British War Medal, Victory Medal |