| Regimental number | 442 |
| Place of birth | Dunach near Talbot, Victoria |
| School | Christian Brothers (Catholic) School, Ballarat, Victoria |
| Religion | Church of England |
| Occupation | Agent |
| Address | 13 Duff Street, West Perth, Western Australia |
| Marital status | Single |
| Age at embarkation | 36 |
| Next of kin | Mrs A Harken, 13 Duff Street, West Perth, Western Australia |
| Previous military service | Served in the Boer War, enlisted 6th Contingent |
| Enlistment date | |
| Date of enlistment from Nominal Roll | |
| Rank on enlistment | Private |
| Unit name | 11th Battalion, D Company |
| AWM Embarkation Roll number | 23/28/1 |
| Embarkation details | Unit embarked from Fremantle, Western Australia, on board HMAT A11 Ascanius on |
| Rank from Nominal Roll | Private |
| Unit from Nominal Roll | 11th Battalion |
| Fate | Killed in Action |
| Miscellaneous details (Nominal Roll) | *Given name Martin Theodore |
| Place of death or wounding | Gallipoli, Turkey |
| Date of death | |
| Age at death from cemetery records | 36 |
| Place of burial | Lone Pine Cemetery (Plot I, Row H, Grave No. I), Gallipoli |
| Panel number, Roll of Honour, Australian War Memorial | 62 |
| Miscellaneous information from cemetery records | Parents: A. Cornelius and Annie HARKEN, 973 Wellington Street, Perth, Western Australia. Native of Dunach, Victoria. True name is HARKEN, Martin Theodore |
| Other details |
War service: Egypt, Gallipoli Medals: 1914-15 Star, British War Medal, Victory Medal |