The portrait I posted is by Anton Raphael Mengs and is in Munich, I believe.
The Archduchess Maria Josefa (1699-1757) was married in 1719 to Friedrich August of Saxony and she and her husband were compelled to sign a formal renunciation of their claims to the Austrian succession by Karl VI. The couple lived an exemplary married life - Friedrich August was not at all like his father Augustus the Strong, King of Poland and Elector of Saxony, who was famous for his numerous mistresses and illegitimate children. (However, her eldest son Friedrich Christian thought his parents were not as close to one another compared to himself and his wife). They had 14 children of whom 11, 5 sons and 6 daughters, reached adulthood. Maria Josefa and her children were very fond of one another and very close, particularly when the children were younger, and when she had to leave her children to accompany her husband to Poland they frequently corresponded (in French, the language of the aristocracy), and later on when her children left home, they continued to keep in close touch. The children had pet names (Maria Josefa, who became Dauphine of France, was 'Pepa') and they were encouraged to write to her without formality.
She and her husband loved hunting, and - although Saxony was largely protestant - they were both pious Catholics and collected about 2,000 relics between them, and were instrumental in building the Hofkirche in Dresden dedicated to the Blessed Trinity. She went to Mass twice a day and her confessor actually recommended her to reduce her 'excessive prayer'. She wasn't narrow minded however, as she kept on good terms with the many illigitimate brothers and sisters of her husband.
Maria Josefa had a strong personality and greatly influenced her husband, functioning as an unofficial regent or deputy and forwarding her own political aims. For example, she thwarted attempts by her son Friedrich Christian to visit Poland with his wife, Maria Antonia of Bavaria as she wanted her second son to succeed to the Polish throne. Five of her children made brilliant marriages - her daughters Maria Amalia, Maria Anna, and Maria Josefa married the future Carlos III of Spain, the Elector Maximillian III Joseph of Bavaria, and the Dauphin of France, respectively, and her eldest son married Maria Antonia of Bavaria while her fourth son Albrecht married the Archduchess Maria Christine, the one daughter of Maria Theresa who was allowed to marry for love.
Maria Josefa stayed in Saxony when it was attacked in the Seven Year's War by Friedrich II of Prussia in 1756, and helped organise resistance to the invaders as far as she could, while her husband fought from Poland. She died a virtual prisoner of the Prussians in Dresden, without having seen her husband since they parted in 1736.