Were Paul I of Russia and Napoleon alive at the same time?
Yes. Paul I of Russia and Napoleon were alive at the same time for 31 years, from 1769 to 1801.
Paul I of Russia was 14 when Napoleon was born.
Napoleon was 31 when Paul I of Russia died, aged 46.
Paul I of Russia
The ninth Emperor of Russia from 1796 to 1801
Born 20 September 1754 (Julian calendar) · died 11–12 March 1801 (Julian calendar), aged 46
Napoleon
French military leader, French Emperor 1804–1814 and again in 1815
Born 15 August 1769 · died 5 May 1821, aged 51