From the early decades following the abolition of Slavery, and up the 1960’s which marked the end of the late housing society, the figure of the estate manager dominated the Caribbean Social landscape within the sugar cane base industry. The present paper reviews the outlines of this social group, observing during inter war period, a cross time in the construction of West Indian Societies. The paper, based on a rigourous study of the Galion archives by cross-referencing the classical exegis of sources and the qualitative approach through networks. This study is a milestone in the writing of a Caribbean Contemporary Social History with these tools. Both articles combining the Jean-Pierre Sainton and Jessica Pierre-Louis’s researches provide the first results : Who were the estates managers of this great sugar factory ? What was their Social background ? How did they position them selves between the owners and the workers ? What does this type of methodological crossover add to the construction of a Caribbean historical Sociology ?