The lady for whom the Mozart Requiem was commissioned, has for long simply been refered to as Anna nee von Flammberg. Her proper family name was in fact Prenner (Flammberg was a title), her full name being Maria Anna Theresa Prenner von Flammberg. She was the daughter of the wealthy Wilhelm and Magdalena and was born on 15 November 1770 at this castle in Niederhollabrunn which was unknown to Mozart historians for almost two centuries. The family was musical and her father was benefactor of the church in nearby Niederfellabrunn. The castle has been turned into a cultural venue since this photograph with KXI.626 outside it was taken.