| Regimental number | 6734 |
| Place of birth | Charters Towers Queensland |
| Religion | Church of England |
| Occupation | Horse breaker |
| Address | Mirtna Station via Charters Towers, Queensland |
| Marital status | Single |
| Age at embarkation | 27 |
| Next of kin | Mother, Mrs M T Clark, Mirtna Station via Charters Towers, Queensland |
| Enlistment date | |
| Rank on enlistment | Private |
| Unit name | 15th Battalion, 22nd Reinforcement |
| AWM Embarkation Roll number | 23/32/2 |
| Embarkation details | Unit embarked from Brisbane, Queensland, on board HMAT A55 Kyarra on |
| Rank from Nominal Roll | Lance Corporal |
| Unit from Nominal Roll | 15th Battalion |
| Fate | Returned to Australia |
| Family/military connections | Brothers: 6744 Lance Corporal Archibald Kennedy CLARK, 15th Bn, returned to Australia, 19 June 1919; 6735 Pte Thomas CLARK, 15th Bn, returned to Australia, 8 January 1919. |
| Other details |
War service: Western Front Medals: British War Medal, Victory Medal |