caption father death_date death_place succession birth_place house mother cor_type consort birth_date coronation spouse issue image article_title reign
queen mother bona by lucas cranach the younger gian galeazzo sforza 19 november 1557 bari , italy queen of poland grand duchess of lithuania vigevano , italy house of sforza isabella of naples poland yes 2 february 1494 18 april 1518 sigismund i , king of poland isabella king of poland sophia , duchess of brunswick-lüneburg anna , , queen of poland catherine , queen of sweden queen of hungary sigismund ii augustus , cranach the younger bona sforza.jpg bona sforza
 1518 -- 1548
bona sforza

bona sforza -lrb- 2 february 1494 -- 19 november 1557 -rrb- was a member of the powerful house of sforza , which ruled the duchy of milan since 1447 .
in 1518 , she became the second wife of sigismund i the old , the king of poland and grand duke of lithuania .
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 .
