| Regimental number | 29888 |
| Place of birth | Bridgewater, South Australia |
| School | Public Schools, South Australia |
| Religion | Church of England |
| Occupation | Clerk |
| Address | Aldgate, South Australia |
| Marital status | Single |
| Age at embarkation | 28 |
| Next of kin | Father, A Lock, Bridgewater, South Australia |
| Enlistment date | |
| Rank on enlistment | Corporal |
| Unit name | Howitzer Brigade 120 |
| AWM Embarkation Roll number | 13/136/1 |
| Embarkation details | Unit embarked from Melbourne, Victoria, on board HMAT A60 Aeneas on |
| Rank from Nominal Roll | Temporary Sergeant |
| Unit from Nominal Roll | 2nd Field Artillery Brigade |
| Other details from Roll of Honour Circular | Member of the Adelaide Rifle Club. |
| Fate | Died of wounds |
| Place of death or wounding | Passchendaele, Ypres, Belgium |
| Age at death | 30 |
| Age at death from cemetery records | 30 |
| Place of burial | The Huts Cemetery (Plot X, Row B, Grave No. 6), Belgium |
| Panel number, Roll of Honour, Australian War Memorial | 12 |
| Miscellaneous information from cemetery records | Parents: Alfred and Mary LOCK, Bridgewater, South Australia |
| Other details | After the war the township of Lock, 160 km north of Port Lincoln, Eyre Peninsula, South Australia, was named after him. He had been a member of the survey branch, Department of Lands, South Australia. |