Maria Aloysia of Dietrichstein German noblewoman and countess (1700–1783) Parents Walther Franz Xaver Anton, Prince of Dietrichstein Caroline Maximiliane, Gräfin Pruskovska z Pruskova Children Maria Wilhelmine von Althann Michael Emanuel von Althann Siblings Maria Josepha of Dietrichstein Johann Leopold von Dietrichstein Karl Maximilian, Prince of Dietrichstein Partners Michael Wenzel II von Althann