ca. 1735 Maria Augusta von Wuerttemberg by Jan Phillip von Schlichtem (Schloßmuseum Ludwigsburg)
The Thurn und Taxis family, now noted for the "Punk Princess" Gloria, was already rich when Maria Augusta was born in 1706, growing up in the Austrian Netherlands. She was married to Karl Alexander, Duke of Wuerttemberg-Winnental (later Duke of Wuerttemberg), with whom she had a turbulent marriage that produced four surviving children. Her Wikipedia article is here.