Princess Adelaide of Schaumburg-Lippe was daughter of Prince William of Schaumburg-Lippe and consort of the last reigning Duke of Saxe-Altenburg Ernst II. Wikipedia
Born: September 22, 1875, State Chateau Ratiborice, Česká Skalice, Czechia
Died: January 27, 1971 (age 95 years), Ballenstedt, Germany
Great-grandparents: Philip II, Count of Schaumburg-Lippe, Princess Charlotte of Denmark, Prince William of Hesse-Kassel, and more
Grandchildren: Princess Barbara of Prussia, Prince Alfred of Prussia, and Alfred van Pruisen