Jérôme-Napoléon Bonaparte (15 November 1784-24 June 1860) was the youngest brother of Napoléon Bonaparte and was the character Jerome in the 2003 movie Hornblower: Duty portrayed by David Berkin.
Jérôme had travelled to the United States and had married Elizabeth "Betsy" Patterson in Maryland. The couple was attempting to enter France to see Jerome's brother, Napoleon, to convince him to recognize their marriage.
Elizabeth ends up on London where she give birth to Jérôme-Napoléon Boneparte II, who . Their marriage is annulled by Napoleon, Jérôme ends up in command of the ship of the line Vétéran under Contre-Admiral Willaurez, then later King of Westphilia marrying Princess Catharina of Würtenberg.