Historian, German philologist, long-standing contributor at Austrian national radio station Ö1 and author of radio features on literature, the fine arts and music. Herrman lives in Vienna and is a relative of Albert Herzog, the administrator of the Sandgrube and lover of August Rieger. It is thanks to Herrman that the correspondence, as well as the court papers concerning the Aryanisation of the Sandgrube vineyard, have been discovered and scrutinised.