Johann Sigismund Friedrich von Khevenhüller-Metsch
Luitpoldina Gräfin von Khevenhüller-Metsch
Biographisches Lexikon des Kaiserthums Oesterreich
General historical-biographical-literary concise dictionary of all the remarkable people who died in the first decade of the nineteenth century
Khevenhüller, Johann Sigismund Friedrich Fürst (BLKÖ)