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.
Prince Paul of Yugoslavia
Prince Paul of Yugoslavia, also known as Paul Karađorđević (, , English transliteration: "Paul Karageorgevich"; 27 April 1893 – 14 September 1976), was Prince Regent of Yugoslavia during the minority of King Peter II. Paul was a first cousin of Alexander I and thus a first cousin-once-removed of Peter II.