| Regimental number | 1158 |
| Place of birth | Deloraine, Tasmania |
| School | Beaconsfield State School, Tasmania |
| Religion | Roman Catholic |
| Occupation | Miner |
| Address | Queenstown, Tasmania |
| Marital status | Single |
| Age at embarkation | 22 |
| Next of kin | Mother, Mrs Annie Brennan, Queenstown, Tasmania |
| Enlistment date | |
| Rank on enlistment | Private |
| Unit name | 15th Battalion, H Company |
| AWM Embarkation Roll number | 23/32/1 |
| Embarkation details | Unit embarked from Melbourne, Victoria, on board Transport A40 Ceramic on |
| Rank from Nominal Roll | Private |
| Unit from Nominal Roll | 15th Battalion |
| Fate | Returned to Australia |
| Family/military connections | Brother: 3623 Pte James BRENNAN, 26th Bn, returned to Australia, 13 February 1917. |
| Other details |
War service: Western Front Medals: British War Medal, Victory Medal |
| Date of death | |
| Place of burial | Rookwood Necropolis |