Born in Port-au-Prince, Nau's most famous work is Histoire des Caciques d'Haïti, a history of the "Caciques", or tribal chiefs of native inhabitants (Taïnos), of Haiti. Nau was the co-editor of two important magazines, Le Républicain and L'Union, which were published by his brother Ignace Nau.
Nau was born in Port-au-Prince, where he is famous for writing Histoire des Caciques d'Haïti, a history of the "Caciques", or native tribal leaders (Taïnos), of Haiti. Nau collaborated on two significant magazines, Le Républicain and L'Union, which were published by his brother Ignace Nau.