Paul I of Russia
Paul I (; "Pavel Petrovich") ( – ) reigned as Emperor of Russia between 1796 and 1801. Officially, he was the only son of Peter III and Catherine the Great, though Catherine hinted that he was fathered by her lover Sergei Saltykov, who also had Romanov blood, being a descendant of the first Romanov tsar's sister, Tatiana Feodorovna Romanova.
Anna Ivanovna Baryatinskaya Tolstoy
After Paul I of Russia's death in March 1801, at the request of the Empress Elizabeth Alexeievna, Countess Tolstoy returned to her husband in Russia. She was present at the coronation of Tsar Alexander I of Russia in Moscow, but soon again went abroad with the children and traveled extensively in Europe. She remained a close friend of the Empress. Her letters to the Empress were published in 1909 by Grand Duke Nikolai Mikhailovich.