If we assume that the wrecks general location is true, this is my favourite.
Solon II
Name Solon II
Type: Steam merchant
Tonnage 4.561 tons
Completed 1925 - W. Gray & Co Ltd, Sunderland
Owner T. & J. Brocklebank Ltd, Liverpool
Homeport Swansea
Date of attack 3 Dec, 1942
Nationality:British
Fate Sunk by U-508 ( Georg Staats)
Position 07.45N, 56.30W - Grid EO 5225
Complement 82 (75 dead and 7 survivors).
Route Iskerderun, Turkey - Capetown - Pernambuco - Trinidad - Baltimore
Cargo Manganese ore and 2000 tons of copper
History Built as French Solon for Compagnie de Navigation d“Orbigny, Paris. On 17 Jul, 1940, the Solon was seized at Swansea by Britain,
transferred to the Ministry of War Transport (MoWT) and renamed Solon II.
Notes on loss At 23.56 hours on 3 Dec, 1942, the unescorted Solon II (Master John Robinson) was torpedoed and sunk by U-508 northeast of Georgetown, British Guiana. The master, 68 crew members and six gunners were lost. The fourth engineer Alexander Macfarlane and six survivors made landfall at Weldad, 12 miles west of the River Berbice, British Guiana on 7 December.
http://www.uboat.net/allies/merchants/2488.html