Anton Herzog was a school teacher in Wiener Neustadt and noted for his account of the commissioning of the Requiem from Wolfgang Amadeus Mozart by Count Franz von Walsegg.
[4] Herzog offered a first-person account recognized as crucial in the preservation of the history of Mozart's Requiem.
He stated that he had personal involvement with Walsegg, including two performances of the work, which the count directed in December 1793 and February 1794.
[7] When he attempted to publish the history of the events leading to the composition of the piece 47 years earlier, he was a school teacher at Wiener Neustadt, a city halfway between Stuppach and Vienna.
[5] For instance, there was Herzog's claim that the Requiem's manuscript used by the publisher Breitkopf & Hartel for its printed publication of the material contained a different Agnus Dei from the version owned by Walsegg.