Question: 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?
Sentence (from "Mozart family grand tour"): The Mozart family grand tour was a journey through western Europe, undertaken by Leopold Mozart, his wife Anna Maria, and their musically gifted children Maria Anna (Nannerl) and Wolfgang Amadeus from 1763 to 1766.
Relevant evidence: No