Career
Together with Joseph Loth, she was co-editor of Revue Celtique and director at the École pratique des hautes études in Paris, France. Her best-known work is Dieux et héros des Celtes (1940), which appeared in a posthumous English translation by Myles Dillon as Gods and Heroes of the Celts (1949). lieutenant deals with the gods and heroes of the continental Celts and Irish mythology.