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In page Klara Izabella Pacowa:

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During the reign of King Michał Korybut Wiśniowiecki, she and her husband were the leaders of the Pro-French Pac-Party and suggested a marriage between the king and the French candidate for the position of queen consort in alliance with the French envoy Hugo de Lionne. When this ended in failure in 1669, they made an alliance with Austria instead, and she was appointed lady-in-waiting to the king's new queen, Eleanor of Austria. Klara Izabella Pacowa swiftly managed to gain the confidence of queen Eleanor, as she helped the newly arrived queen acclimate to Poland and navigate the political system, and in return became her most influential lady-in-waiting.[citation needed]