Maria Anna Sophie Sabina Angela Franziska Xaveria of Saxony (1728-1797) by ? (location unknown to gogm)
She was the daughter of Archduchess Maria Josepha and sister of Queen Maria Amalia of Spain and Dauphine Marie Josephe Her Wikipedia
article is here.
Born a Wettin, she sought and received Prussian help to secure rights for
the House of Palatinate-Birkenfeld, a branch of the Wittelsbach family.
This branch is the branch from which the Kings of Bavaria descended. The Palatinate
(Ger. Pfalz) borders France, Luxembourg, and Belgium.