Countess Donata of Castell-Rüdenhausen was a German noblewoman. She was the daughter of Siegfried, 4th Prince of Castell-Rüdenhausen , head of the Rüdenhausen branch of the House of Castell, and his wife, Countess Irene of Solms-Laubach . She was the mother of Prince Georg Friedrich of Prussia the current head of the House of Hohenzollern, the ruling dynasty of the German Empire and of the Kingdom of Prussia until 1918.
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