In her death notice, there are 9 great-grandchildren: "Friedrich-Otto, Mattäus und Hugo Frhr Mayr von Melnhof, Franz-Anton, Josef und Rudolf Frhr von Waechter, Philippa, Livia und Rosa Frn Mayr von Melnhof".Countess Theresia of Waldburg zu Zeil und Trauchburg died on Sep 25 at Schloß Hogl at the age of 90.
Maria Theresia Walburga Elisabeth Antonia was born on Aug 8, 1931 in Schloß Zeil. She was the third of seven children of Erich August, Prince of Waldburg (1899-1953) and his wife Princess Monika of Lowenstein-Wertheim-Rosenberg (1905-1992), and the last of her siblings to pass away.
In 1962 she married Alois, Count von Nostitz-Rieneck (1925-2003). They had four children together: Friedrich (*1963), Monika (*1965), Sophie-Bernadette (*1967), and Franz-Erwein (*1970). She is survived by her children as well as 14 grandchildren and 8 great-grandchildren.
Source: Descendants of Archduke Franz Karl of Austria
https://www.angelfire.com/realm/gotha/gotha/waldburg.html
Therese Gräfin von Nostitz-Rieneck geborene Gräfin von Waldburg zu Zeil und Trauchburg (1931-2021)