The governor's mansion was a large estate owned by Jean-Jacques Blaise d'Abbadie, the French colonial governor of Louisiana, during the eighteenth century. It was located in New Orleans, near the Place d'Armes.
A frequent host to parties, the mansion's courtyard was spacious and pleasantly decorated with greenery, as well as a gazebo, which was set up in the center. However, with fence walls around the premises and guards permanently keeping watch over the three entrances, the estate's grounds were difficult to access without proper invitation.
In 1765, governor d'Abbadie hosted a social event at the mansion, during which he had a private meeting in his office with the Templar Rafael Joaquín de Ferrer, concerning their deal to keep d'Abbadie in power in exchange for his help in procuring slaves and vagrants for a secret project in Mexico. This discussion was eavesdropped upon by the Assassin Aveline de Grandpré, who, following the departure of de Ferrer, assassinated governor d'Abbadie, foiling their plans.
- A gentleman carrying a jeweled brooch could be found on one of the mansion's balconies.