Catherine Pavlovna of Russia families, the eldest of whom was barely eight years old. After her death, her surviving husband built Württemberg Mausoleum in Rotenberg, Stuttgart, dedicated to her memory. William later married again; his next wife was his first cousin, Princess Pauline of Württemberg. Ekaterina had two sons with Duke George of Oldenburg (9 May 1784 – 27 December 1812): With the King of Württemberg, she had the following children: Catherine Pavlovna of Russia Grand Duchess Catherine Pavlovna of Russia (; 21 May 1788 [OS 10 May 1788] – 9 January 1819) later Queen Catharina Pavlovna of Württemberg, was the fourth daughter of
Olga Nikolaevna of Russia aunt, Grand Duchess Catherine of Russia; Olga's paternal uncle, Grand Duke Michael of Russia, married William I's niece, Princess Charlotte of Württemberg. Olga gave her consent to Charles' proposal of marriage after only a few meetings, on 18 January. The wedding was held in great splendor on 13 July 1846 at the Peterhof Palace, Russia. The couple came back from Russia to Württemberg on 23 September. They lived mostly in the Villa Berg in Stuttgart and in the Kloster Hofen in Friedrichshafen. The couple had no children, probably because of Charles’ homosexuality. Olga's husband became the object of scandal several