Who was Archduchess Maria Anna of Austria's grandfather on her mothers side?
Archduchess Maria Anna of Austria (1804–1858) Marie Anne Franziska Theresia Josepha Medarde of Austria (8 June 1804 – 28 December 1858) was an Archduchess of Austria and the daughter of Franz II, Holy Roman Emperor and his second wife, Maria Theresa of Naples and Sicily.
Marie Louise, Duchess of Parma Marie Louise (Maria Ludovica Leopoldina Franziska Therese Josepha Lucia; Italian: "Maria Luigia Leopoldina Francesca Teresa Giuseppa Lucia"; 12 December 1791 – 17 December 1847) was an Austrian archduchess who reigned as Duchess of Parma from 1814 until her death. She was Napoleon's second wife and, as such, Empress of the French from 1810 to 1814.