"Princess Marie of Windisch-Graetz (11 December 1856 – 9 August 1929) was an Austrian noble. She was the daughter of Hugo, Prince of Windisch-Grätz (himself son of Weriand, Prince of Windisch-Graetz and Princess Maria Eleonore Carolina of Lobkowicz) and Duchess Louise of Mecklenburg-Schwerin (herself the eldest daughter of Grand Duke Paul Frederick and Princess Alexandrine of Prussia)." - (en.wikipedia.org 27.07.2022)