Antoni Radziwiłł

Prince Antoni Henryk Radziwiłł (; 13 June 1775 – 7 April 1833) was a Polish and Prussian noble, aristocrat, musician, and politician. Initially a hereditary Duke of Nieśwież and Ołyka, as a scion of the Radziwiłł family he also held the honorific title of a ''Reichsfürst'' of the Holy Roman Empire. Between 1815 and 1831 he acted as ''Duke-Governor'' (, ) of the Grand Duchy of Posen, an autonomous province of the Kingdom of Prussia created out of Greater Polish lands annexed in the Partitions of Poland. Provided by Wikipedia