What is the full name of the eldest sibling who performed for the Empress Maria Theresa at the Imperial Court during a visit to Vienna in 1762?
Maria Anna Mozart Maria Anna Walburga Ignatia Mozart (30 July 1751 – 29 October 1829), called Marianne and nicknamed "Nannerl", was a musician, the older sister of Wolfgang Amadeus Mozart and daughter of Leopold and Anna Maria Mozart.
Archduchess Ludovika Elisabeth of Austria Archduchess Ludovika Elisabeth Franziska of Austria (18 February 1790 Vienna, Austria - 24 June 1791 Vienna, Austria) was the daughter of Francis II, Holy Roman Emperor, later Francis I of Austria, and Elisabeth of Württemberg. She died in infancy and is buried in the Imperial Crypt, Vienna, Austria.