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.
Princess Josephine of Baden Princess Josephine Friederike Luise of Baden (21 October 1813 – 19 June 1900) was born at Mannheim, the daughter of Charles, Grand Duke of Baden and his wife, Stéphanie de Beauharnais. Through her eldest son Leopold, she is the ancestress of the Romanian royal family and the Yugoslav Royal Family. Through her daughter Marie, she is also the ancestress of the Belgian royal family and the Grand Ducal family of Luxemburg.