"Prince Antoni Henryk Radziwiłł (Polish pronunciation: [radʑiˈviw]; 13 June 1775 – 7 April 1833) was a Polish and Prussian noble, aristocrat, musician and politician. Initially a hereditary ...
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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 (Polish: książę-namiestnik, German: Statthalter) 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." - (en.wikipedia.org 31.01.2020)
