Duchess Therese Wilhelmine Olga Friederike of Oldenburg was the youngest daughter of Duke Peter Georgievich of Oldenburg and his wife Princess Therese of Nassau-Weilburg. Wikipedia
Born: March 30, 1852, Saint Petersburg, Russia
Died: April 19, 1883 (age 31 years), Saint Petersburg, Russia
Great-grandparents: Paul I of Russia, Maria Feodorovna, Peter I, Grand Duke of Oldenburg, and more
Grandparents: Catherine Pavlovna of Russia, Duke George of Oldenburg, William, Duke of Nassau, and more
Aunt: Sophia of Nassau