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.
Battle of the Palaces
Paul I was killed in Saint Michael's Castle . Brenna, Carlo Rossi and many other Italian artists employed by the late emperor left Russia. Alexander and his court relocated to Winter Palace, his Office of the Court () converted the redundant castle into offices and living quarters. Soon the former palace housed nearly 900 residents, including future field marshal von Diebitsch and, ironically, retired Charles Cameron and his wife. In 1819 the building was converted into a military college; palace park, forts and moats eventually disappeared.