James Morrison et Cie
Principal: James Morrison (1806-1878)
Ironworks established by Messrs Sherwood ( Bailey Sherwood and Newman Sherwood), later to be called "James Morrison et Cie." who had taken over one of the Marquise ironworks which was in financial difficulties. They determined to use the pig iron cast at Marquise to produce wrought iron by puddling in Guînes, and roll it into railway rails. They built a factory adjacent to the canal, served by a private railway.
Source: [1]
Note: At the same time, another other iron company was active in Marquise, Pinart Freres.