Elzbieta-Bonifacja of Poland

Elzbieta-Bonifacja's father was Wladyslaw II Jagiello King of Poland and her mother was Jadwiga Queen of Poland Poland.  Her paternal grandparents were Algirdas of Lithuania Duke of Lithuania and Ul'iana Aleksandrovna. She had two brothers named Casimir IV of Poland and Wladyslaw III of Poland.  She died in 1399.