| School | Sydney Grammar School, New South Wales |
| Religion | Church of England |
| Occupation | Business manager |
| Address | 'Annapata', 157 Stanmore Road, Stanmore, New South Wales |
| Marital status | Married |
| Age at embarkation | 22 |
| Next of kin | Wife, Mrs Margerie Ethel Clark, 'Annapata', 157 Stanmore Road, Stanmore, New South Wales |
| Previous military service | Nil |
| Enlistment date | |
| Date of enlistment from Nominal Roll | |
| Rank on enlistment | 2nd Lieutenant |
| Unit name | 55th Battalion, 5th Reinforcement |
| AWM Embarkation Roll number | 23/72/3 |
| Embarkation details | Unit embarked from Sydney, New South Wales, on board HMAT A60 Aeneas on |
| Rank from Nominal Roll | Lieutenant |
| Unit from Nominal Roll | 55th Battalion |
| Recommendations (Medals and Awards) |
Military Cross Recommendation date: |
| Fate | Killed in Action |
| Place of death or wounding | Villers-Bretonneux, France |
| Age at death | 26.4 |
| Age at death from cemetery records | 26 |
| Place of burial | Aubigny British Cemetery (Somme) (Row B, Grave No. 11), France |
| Panel number, Roll of Honour, Australian War Memorial | 160 |
| Miscellaneous information from cemetery records | Parents: Elizabeth and the late Theodore CLARK, husband of Margerie E. CLARK, 'Koorali', 14 Holt Street, Stanmore, New South Wales. Native of Marrickville |
| Medals |
Military Cross 'For conspicuous gallantry and devotion to duty. When the objective had been reached he so organized his men that a thorough and effective system of defence was prepared to meet the heavy enemy counter attacks which followed. By personal reconnaissance he established strong points in advance of the line, which enabled any movements of the enemy to be quickly detected. His courage and coolness were an inspiration to his men.'
Source: 'Commonwealth Gazette' No. 137 Date: |
| Family/military connections | Brother: 4487 Pte Cuthbert Theodore CLARK, 54th Bn, returned to Australia, 13 February 1917; brother-in- law: Chaplain Spencer Edward MAXTED, 14th Infantry Brigade, killed in action, 17-19 July 1916. |
| Other details |
War service: Western Front Medals: Military Cross, British War Medal, Victory Medal |