| Regimental number | 4287 |
| Place of birth | Dudley Street, Semaphore, South Australia |
| School | Le Fevres Pininoular School, South Australia |
| Religion | Church of England |
| Occupation | Salesman |
| Address | Dudley Street, Kew, Semaphore, South Australia |
| Marital status | Single |
| Age at embarkation | 20 |
| Next of kin | Father, William George Lock, Dudley Street, Kew, Semaphore, South Australia |
| Previous military service | Served in Naval Force under Compulsory Service and served eight months from the declaration of war in Fort Lays as Naval Signaller previous to enlisting in AIF. |
| Date of enlistment from Nominal Roll | |
| Rank on enlistment | Private |
| Unit name | Australian Stationary Hospital 2, Reinforcement 8 |
| AWM Embarkation Roll number | 26/71/2 |
| Embarkation details | Unit embarked from Fremantle, Western Australia, on board HMAT A68 Anchises on |
| Rank from Nominal Roll | Private |
| Unit from Nominal Roll | 3rd Field Ambulance |
| Fate | Killed in Action |
| Miscellaneous details (Nominal Roll) | *Spelt Frederick Colman Lock on NR |
| Place of death or wounding | Bullecourt, France |
| Age at death | 22.7 |
| Place of burial | Queant Road Cemetery (Plot IV, Row H, Grave No. 10), Buissy, France |
| Panel number, Roll of Honour, Australian War Memorial | 183 |
| Miscellaneous information from cemetery records | Parents: William and Augusta LOCK, Dudley Street, Semaphore, South Australia |
| Family/military connections | Two cousins Frank Edwin Le Leu and Edwin James Le Leu. |