Pierre-François' daughter Victore-Francios, became mother superior at Ursulines Convent and led prayers in the streets in the Battle of New Orleans.
After a month of investigation, Olivier de Vézin sent his report to French Minister of the Marine, Jean-Frédéric Phélypeaux.
Olivier de Vézin and two former partners in the mill agreed to collaborate, receiving royal approval in 1736.
With bankruptcy fast approaching Olivier de Vézin resigned on 13 October 1740 and immediately returned to France.
This position dissatisfied Olivier de Vézin, but he went to Louisiana, where he unsuccessfully attempted to exploit iron mine.