Background
Princess Olga was born at Stuttgart, Württemberg, the younger twin daughter of Duke Eugen of Württemberg (1846–1877), (son of Duke Eugen of Württemberg, and Princess Mathilde of Schaumburg-Lippe) and his wife, Grand Duchess Vera Constantinovna of Russia (1854–1912), (daughter of Grand Duke Konstantin Nikolayevich of Russia and Princess Alexandra of Saxe-Altenburg).