Franz Viktor Werfel was an Austrian-Bohemian novelist, playwright, and poet whose career spanned World War I, the Interwar period, and World War II. He is primarily known as the author of The Forty Days of Musa Dagh, a novel based on events that took place during the Armenian Genocide of 1915, and The Song of Bernadette, a novel about the life and visions of the French Catholic saint Bernadette Soubirous, which was made into a Hollywood film of the same name.

https://en.wikipedia.org/wiki/Franz_Werfel