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.
Michael Corleone
John Paul I dies soon after being elected pope, poisoned by Gilday. Michael learns that Altobello (in league with the conspirators) has hired an assassin named Mosca to kill him. Mosca murders Tommasino, and Michael vows before his old friend's casket to sin no more. Vincent reports that Lucchesi, working with Altobello, is behind the assassination attempts on Michael.