Ignaz von Seyfried. 1829 lithograph by Josef Kriehuber Ignaz Xaver, Ritter von Seyfried (15 August 1776 – 27 August 1841) was an Austrian musician, conductor and composer. He was born and died in Vienna. According to a statement in his handwritten memoirs[1] he was a pupil of both Wolfgang Amadeus Mozart and Johann Georg Albrechtsberger. He edited Albrechtsberger's complete ..