| Surname | CLARK |
| Forename(s) | RALPH JOHNSTON |
| Service Number | J17004 |
| Rank | Pilot Officer |
| Service | Royal Canadian Air Force |
| Trade | Air Gunner |
| Fate | Survived the war |
| Awards with 158 Squadron | DFC |
| Awards with another Squadron | |
| Posted In | 1942-10-20 |
| From Squadron | 158 CF |
| Comments | Died 01 August 2019 |