Roger Martin du Gard (1881-1958) was a French novelist, short story writer, and playwright. He is best known for his ten-volume novel "The Thibaults" (also known as "The World of the Thibaults"), which follows the lives of a bourgeois family in France during the early 20th century.
He also wrote:
* "Jean Barois" (1913)
* "The Notebooks of André Gide" (1928)
* "Summer 1914" (1936)
* "The Disinherited" (1946)
He received the Nobel Prize in Literature in 1937.
If you were referring to someone else, please clarify the name and I can help you find their works.