I became trapped trying to figure out which Maria Theresa was which, mistaking her for Luisa Maria Amalia di Borbone, so that mis-identified image was moved and now starts this new Subalbum for Maria Theresa, Queen of Saxony. To avoid confusion, the keywords beneath each image in this Subalbum include the English-language identifier "Maria Theresa of Austria (1767-1827).”
Her Wikipedia article is here. She was the daughter of Maria Luisa of Spain.