
Countess von Wilczek (1714-1777)
Maria Gertrud Friederike of Oettingen-Spielberg (* 17. April 1714 in Oettingen in Bayern; † 30. November 1771 in Vienna) was a countess von Wilczek. She was 57 years old. She was married to Josef Maria Wilczek. She had at least 3 children (1 son and 2 daughters).