| Regimental number | 1879 |
| Place of birth | St Leonard's, West Swan, Western Australia |
| School | Guildford Gammar School, Western Australia |
| Religion | Church of England |
| Occupation | Farmer |
| Address | 'St Leonards', Guildford, Western Australia |
| Marital status | Single |
| Age at embarkation | 20 |
| Height | 5' 5" |
| Weight | 130 lbs |
| Next of kin | Father, George Barrett-Lennard, 'St Leonards', Guildford, Western Australia |
| Previous military service | Served in the Guildford Grammar Cadets. |
| Enlistment date | |
| Place of enlistment | Blackboy Hill, Western Australia |
| Rank on enlistment | Driver |
| Unit name | Field Artillery Brigade 3, Battery 8 |
| AWM Embarkation Roll number | 13/31/1 |
| Embarkation details | Unit embarked from Fremantle, Western Australia, on board Transport A7 Medic on |
| Rank from Nominal Roll | Gunner |
| Unit from Nominal Roll | 3rd Field Artillery Brigade |
| Fate | Killed in Action |
| Place of death or wounding | Gallipoli, Turkey |
| Age at death | 21 |
| Place of burial | Shell Green Cemetery (Plot II, Row K, Grave No. 27), Gallipoli |
| Miscellaneous information from cemetery records | Paents: George and Amy BARRETT-LENNARD, "Comares", North Road, West Guildford, Western Australia. Native of St. Leonard's, Swan, Western Australia |
| Other details |
War service: Egypt, Gallipoli Proceeded to join Mediterranean Expeditionary Force, 4 April 1915; killed in action, Gallipoli, 17 July 1915. Medals: 1914-15 Star, British War Medal, Victory Medal |
| Sources | NAA: B2455, BARRETT-LENNARD Douglas |