Crew list of Ships hit by U-boats
William Francis Joseph Mercia
Merchant Navy. British
| Born | 1920 | Cardiff | |
| Died | 17 Sep 1940 | (20) |
Roster information listed for William Francis Joseph Mercia
| Ship | Type | Rank / role | Attacked on | Boat | |
|---|---|---|---|---|---|
 | Tregenna | Steam merchant | Assistant Cook | 17 Sep 1940 (+) | U-65 (1) |