Cecylia Maria Radziwiłł

Radziwiłł
Princely arms of the Radziwiłł family, incorporating the Trąby emblem
Current region	Poland
Earlier spellings	Radvila
Place of origin	Kernavė, Grand Duchy of Lithuania
Connected families	Astikai

The Radziwiłł family (Polish pronunciation: [radʑiˈviw]; Lithuanian: Radvila; Belarusian: Радзівіл, Radzivił; German: Radziwill) was a powerful magnate family originating from the Grand Duchy of Lithuania and later the Crown of the Kingdom of Poland. The descendants of Kristinas Astikas, a Lithuanian and a close associate of the 14th century Lithuanian ruler Vytautas, were highly prominent for centuries, first in the Grand Duchy of Lithuania, later in the Polish–Lithuanian Commonwealth and the Kingdom of Prussia. The family has produced many individuals notable in Lithuanian, Belarusian, Polish, German (particularly Prussian) and general European history and culture. The Radziwiłł family received the title of Reichsfürst (prince, Polish: książę, Lithuanian: kunigaikštis, Belarusian: князь, kniaź), from the Holy Roman Empire.