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.
Peter Ludwig von der Pahlen
He extracted from the emperor the written order to arrest his son and heir, Alexander Pavlovich, and showed this to him in order to overcome his fluctuation in the plot. He was present during Paul's strangling on the night of March 12, 1801. After the assassination he acquired an irreconcilable enemy in the Empress Maria Feodorovna who prevented him from occupying any important post under Alexander's reign. On 1 April 1801, he was discharged from the service and ordered to withdraw into his estates in Courland. Pahlen died in Mitava on February 13, 1826.