Jerzy J%C3%B3zef Potocki

Count Jerzy Jzef Potocki was a Polish nobleman, captain of the cavalry and diplomat. His parents were Roman Potocki, Third Ordynat of acut, and Elbieta Matylda Radziwi. He was the grandson of Alfred Jzef Potocki and greatgreatgrandson of Jan Potocki.

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Source: Wikipedia