Franz Xaver Wolfgang Mozart (26 July 1791 ? 29 July 1844), also known as F. X. Mozart, W. A. Mozart Son, or Wolfgang Amadeus Mozart, Jr., was the youngest child of six born to Wolfgang Amadeus Mozart and his wife Constanze. He was the younger of his parents' two surviving children.[1] He was a composer, pianist, conductor, and teacher whose musical style was an early Romanticism, heavily influenced by his father's mature style. Source : Wikipedia