1695 Anne de Souvré, marquise de Louvois (1646-1715) by Simon Dequoy (Versailles)
Simon Dequoy documents the dress worn by Anne de Souvre with stomacher framed by lapel-like revers and engageantes as well as a bustle and Fontanges.
RMN attributes this to Simon Dequoy who I could not find on Google. Google has numerous references to Pierre-Simon Dequoy (1698-1764), a bit young to paint this portrait. According to RMN, Simon Dequoy lived from 1655-1727.
Photo credit Daniel Arnaudet/Jean Schormans.