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.
Grand Duke Michael Nikolaevich of Russia
He served 20 years (1862–1882) as the Governor General of Caucasia, being seated in Tbilisi, the town which most of his children remembered as the home of their childhood. In the course of his life, four members of his family ruled as Emperors of Russia: his father, Nicholas I; his brother, Alexander II; his nephew, Alexander III; as well as his grand-nephew, Nicholas II, whose second daughter, Grand Duchess Tatiana, the Grand Duke was godfather to. He died in Cannes, France, on 18 December 1909. He was the last surviving legitimate grandchild of Paul I of Russia.