author
b. 1849
A 19th-century French writer remembered for a detailed study of the naval commander Jean-Baptiste du Casse, he wrote from inside a family tradition closely tied to French military history. His surviving work has the feel of a careful historical portrait shaped by lineage, archives, and admiration for its subject.

by baron Robert Emmanuel Léon Du Casse
Robert Emmanuel Léon Du Casse was a French author identified in library and archive records as a baron, born in 1849. He is chiefly known today for L'amiral Du Casse, chevalier de la Toison d'or (1646-1715), a French-language biography published in 1876 and preserved in major public-domain collections.
The book focuses on Jean-Baptiste du Casse, and reference sources note that Robert was a descendant of that family line. His background also connects him to another well-known Du Casse figure: the military historian Albert Du Casse, listed in genealogical records as his father.
Very little biographical detail about Robert Emmanuel Léon Du Casse appears to be widely documented online beyond his authorship and family connections. The available record suggests a writer working in the tradition of historical and biographical scholarship rather than a broadly public literary career.