Prince Napoléon
(1822-1891)
the Emperor's cousin

Prince Napoleon Joseph Charles Paul Bonaparte was the troublesome cousin of Napoléon III and the implacable enemy of the Empress Eugénie.

Known in the family by the pet name of ‘Plom-Plom’ because he had been a round, fat baby, the name passed into general use by journalists and the public, who spelt it ‘Plon-Plon.'