This is her terse Wikipedia article - "Theresa Maria Josepha Martha (28 July 1850, Schloß Liechtenstein – 13 March 1938, Munich) was a Princess of Liechtenstein and of Bavaria.
Family: Theresa was the tenth child and ninth daughter of Aloys II, Prince of Liechtenstein and his wife, Countess Franziska Kinsky of Wchinitz and Tettau. She was a younger sister of Johann II, Prince of Liechtenstein and an older sister of Franz I, Prince of Liechtenstein.
Marriage: On 12 April 1882, in Vienna, Theresa married Prince Arnulf of Bavaria, youngest son of Luitpold, Prince Regent of Bavaria and Auguste Ferdinande of Austria. They had only one child, Heinrich (1884–1916), who died in the First World War. She is buried in the Theatinerkirche in Munich.
Titles and styles:
28 July 1850 - 12 April 1882: Her Serene Highness Princess Theresa of Liechtenstein
12 April 1882 - 13 March 1938: Her Royal Highness Princess Theresa of Bavaria.”