Sophia of Masovia [SEP] mother
Sophia of Masovia
Sophia of Masovia (1497/1498 - before 11 March 1543 ) was a Princess of Masovia, daughter of Konrad III Rudy, Duke of Masovia and his wife Anna Radziwiłł. She was a member of the House of Piast.
On 17 September 1520 in Warsaw, Sophia was married by proxy to Stephen VII Báthory. On 17 January 1521, Sophia and her entourage went to Hungary, where in February there was a formal marriage. The couple had three children: Anna, Stephen and Klara; however,
as the youngest daughter of King Sigismund I the Old of the Polish-Lithuanian Commonwealth and his wife Bona Sforza of Milan. Catherine became the spouse of King John III of Sweden and mother of the future Sigismund III Vasa, King of Poland. After the death of her father in 1548, she and her sisters Anna and Sophia moved to Masovia with their mother. After their mother's departure to Italy in 1558, they lived there alone. The sisters were not close to their brother Sigismund II Augustus of Poland. Catherine