Victoire Deslonde's parents were Etienne Deslonde and Maria Dura, f.c.l. We have not connected Etienne in the Deslonde family yet.
Have you used the familysearch.org? The probate court records for New Orleans are a good source for records. In the succession for Desiree Deslondes, there is the name of Armand St. Cyr.