"Bona Sforza d’Aragona (2 February 1494 – 19 November 1557) was Queen of Poland and Grand Duchess of Lithuania. A member of the powerful House of Sforza, which ruled the Duchy of Milan since 1447, she became the second wife of Sigismund I the Old, the King of Poland and Grand Duke of Lithuania in 1518. Their marriage lasted 30 years until Sigismund´s death in 1548. Ambitious and energetic, Bona became heavily involved in the political life of Poland–Lithuania. To increase state revenue, she implemented various economic and agricultural reforms, including the far-reaching Wallach Reform in the Grand Duchy of Lithuania. Her reforms made her the richest landowner in the Grand Duchy. In foreign policy, she opposed the Habsburgs and sought to secure her eldest daughter Isabella Jagiellon in the Kingdom of Hungary." - (en.wikipedia.org 17.11.2019)
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