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Jadwiga, or Hedwig, of Poland was the country's first queen and "most influential woman in Polish history." Crowned at 10, she reluctantly married the much older Grand Duke of Lithuania for political reasons at the age of 12. In her 15-year reign, the devout queen spent much of her time in founding new churches, charity work, and promoting the Polish language at Mass.

© Marcello Bacciarelli | Public Domain