The position of vogt soon became hereditary. While the dominions of Heinrichvon Gleissberg included the towns Gera and Weida, his grandson Henry II the
Academia Real. ISBN 9781390257083. "BLKÖ:Habsburg, Eleonore von Oesterreich (Tochter Philipp's von Oesterreich) – Wikisource". de.wikisource.org (in German)