sexton had informed him that Austrian troops had walked off with the remains of Agnes Bernauer. When the German poet August von Platen inspected the gravestone in 1822, he heard from the female sexton that Agnes and Albert had been switched as infants so that she was actually the duke's daughter and he the son of the barber-surgeon, but that the book which would have confirmed this exchange had been stolen by French soldiers. After excavations in the Chapel at St. Peter failed to produce any results, the Bernauer biographer Felix Joseph Lipowsky had the Carmelite cloister grounds searched in 1897 for evidence of her grave. He found in the cloister archives a note indicating that the grave was in the former Nicholas chapel of the cloister church, but this chapel had been converted to a sacristy after 1692 and the vault underneath filled in. Lipowsky could only assume that her remains were reburied elsewhere during the reconstruction work. Despite subsequent searches, her grave remains undiscovered. The Bavarian king Ludwig I, who had himself visited the Agnes Bernauer Chapel in 1812 when he was crown prince and later dedicated a poem to Agnes, saw to it that at least the masses for Agnes and Albert were again read in the Carmelite church. Since 1922, only one memorial mass is celebrated annually, due to financial limitations; it is paid for by the Bavarian government. In 2013 at the Blutenburg Castle there was erected the Sculpture of Agnes Bernauer with Albert III, Duke of Bavaria by Joseph Michael Neustifter. The memorial was funded by Ursula und Fritz Heimbüchler. In connection with the 1200th anniversary of the Obermenzing / Untermenzing (former Menzing) districts of Munich, on the stage belonging to the Temple "Leiden Christi" next to the Blutenburg Castle, in 2017 took place the premiere of the musical performance "Agnes or the Secret of the Blutenburg Castle", which presented a fantastic version of the fate of Agnes Bernauer. Adaptations Albert and Agnes' tragic love story has long been a staple of folk songs, and over the centuries many new literary and musical versions have been created. Christian Hoffmann von Hoffmannswaldau: Liebe Zwischen Hertzog Ungenand und Agnes Bernin, Poem, 1680 Joseph August Graf von Toerring: Agnes Bernauer, Vaterländisches Schauspiel, Play, 1780 Georg Joseph Vogler (Music), Carl Theodor Traitteur (Libretto): Albert der Dritte von Bayern, Singspiel, UA München 1781 Franz Gleißner (Music): Agnes Bernauerin, Melodrama,