Augustave is probably a combination of the masculine names
Auguste and
Gustave.
Salvat must ultimately come from Latin
salvatus meaning "saved". Also compare the Italian name
Salvatore.
Desir should actually be spelled as Désir, and is derived from the French word
désir meaning "desire". Also compare the related French name
Désiré.
Permal is (also) a rare surname in
France:
https://www.filae.com/nom-de-famille/PERMAL.html (in French)
It might possibly be of Breton origin. Compare the similar-looking Breton names (and patronymic surnames) Premel and Primel, which both come from the Old Breton name Pritmael meaning "beautiful prince":
https://www.filae.com/nom-de-famille/PREMEL.html (in French)
https://www.filae.com/nom-de-famille/PRIMEL.html (in French)
Forchta in biuonga quamon ouer mi, in bethecoda mi thuisternussi.
In ic quad: "uuie sal geuan mi fetheron also duuon, in ic fliugon sal in raston sal?"