Marie Ledoux and her daughters by Marguerite Gérard, ca. 1787
Marguerite Gérard likely knew architect Ledoux and his family. The portrait was probably given as a gift to them. The success of this portrait may have convinced some “patrons” to commission similar ones from her. Claude-Nicolas Ledoux was a French architect who developed an eclectic and visionary architecture linked with nascent pre-Revolutionary social ideals.
source: the well dowered mind