In 1802 Duplantier remarried , to widow Constance Rochon Joyce .
The couple resided part of the time in their country house at Mount Magnolia plantation ( which property today is within the city of Baton Rouge and owned by that city ) .
In 1802 Duplantier remarried , to widow Constance Rochon Joyce , and the couple resided part of the time in their country house at Mount Magnolia plantation ( which property today is within the city of Baton Rouge and owned by that city ) .