She was to be a pawn in a dynastic marriage (her hand in exchange for help booting the UK off of Gibraltar), but UK military success allowed that deal, arranged by Isabel de Farnesio, to be called off. She was able to marry Charles Alexander of Lorraine for love. He turned out to be an inept military leader who may have kept his position because of who he married, but was so bad that he finally had to be retired anyway. Besides military matters, they were appointed Governors of the Austrian Netherlands, now largely Belgium and Luxembourg. Her Wikipedia article is here.

1727 Maria Anna of Austria, sister of Maria Theresia by Andreas Moller (Kunsthistorisches Museum - Wien, Austria)

1731 Maria Anna, Archduchess of Austria, the third child and second daughter of Charles VI and Elisabeth Christine of Brunswick-Wolfenbüttel. (1718 - 1744) by Frederick Bouttats
