Paul I of Russia
Paul remained overshadowed by his mother for most of his life. His reign lasted four years, ending with his assassination by conspirators. He adopted the laws of succession to the Russian throne—rules that lasted until the end of the Romanov dynasty and of the Russian Empire. He also intervened in the French Revolutionary Wars and, toward the end of his reign, added Kartli and Kakheti in Eastern Georgia into the empire which was confirmed by his son and successor Alexander I.
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.