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.
Paul I of Russia
Catherine suffered a stroke on 17 November 1796, and died without regaining consciousness. Paul's first act as Emperor was to inquire about and, if possible, destroy her testament, as he feared it would exclude him from succession and leave the throne to Alexander. These fears may have contributed to Paul's promulgation of the Pauline Laws, which established the strict principle of primogeniture in the House of Romanov, leaving the throne to the next male heir.