Anna of Sagan was the last surviving member of the Hlohovsko-Zaháňský branch of the Silesian Piasts

Silesian Piasts

The Silesian Piasts were the oldest line of the Piast dynasty beginning with Władysław II the Exile, son of Bolesław III Wrymouth, Duke of Poland...

 family, and by marriage duchess of Münsterberg and Oels.

She was the daughter of Prince Jan II the Mad

Jan II the Mad

Jan II the Mad also known as the Bad, the Wild or the Cruel , was a Duke of Żagań-Przewóz since 1439 , from 1449 Duke of Przewóz , during 1461-1468 and briefly in 1472 Duke of Żagań and during 1476-1488 Duke of half-Głogów .He was the fourth and...

. In 1488 she married Duke Charles I

Charles I, Duke of Münsterberg-Oels

Charles I, Duke of Münsterberg-Oels was a member of the House of Poděbrady. He was Duke of Münsterberg and Duke of Oels as well as Count of Kladsko...

 of Münsterberg-Oels, with whom she had twelve children:

1. Henry (* / † 1497)
2. Anna (1499–1504)
3. Catherine (1500–1507)
4. Margareta (1501–1551), married to Jan Zajíc of Hasenburg
5. Joachim
   Joachim of Münsterberg-Oels
   Joachim of Münsterberg was a Duke of Münsterberg and from 1536 to 1542 also Duke of Oels...
   
    (1503–1562), Bishop of Brandenburg
6. Kunhuta (1504–1532), married to Christopher Cernohorsky of Boskowitz
7. Ursula Vorsila (1505–1539), married to Jerome of Bieberstein
8. Henry II
   Henry II, Duke of Münsterberg-Oels
   Henry II of Münsterberg-Oels was from 1536 to 1542 Duke of Münsterberg and of Oels and from 1542 to 1548 Duke of Bernstadt...
   
    (1507–1548), Duke of Münsterberg-Oels
9. Hedwig
   Hedwig of Münsterberg-Oels
   Hedwig of Münsterberg Oels was born Duchess of Münsterberg and Oels and Countess of Kladsko and by marriage Margravine of Brandenburg-Ansbach-Kulmbach....
   
    (1508–1531), married in 1525 George of Brandenburg-Ansbach
10. John
    John, Duke of Münsterberg-Oels
    John of Münsterberg-Oels was Duke of the Münsterberg from 1542 to 1565, Duke of Oels from 1548 to 1565 and Duke of Bernstadt from 1548 to 1565. He also held the title of Count of Glatz.- Life :Johann Berger family was a member of the Münsterberg branch of the noble Poděbrady family...
    
     (1509–1565), Duke of Münsterberg-Oels
11. Barbara (1511–1539), Abbess in Strzelin near Oleśnica
12. George II
    George II, Duke of Münsterberg-Oels
    George II of Münsterberg-Oels was a Duke of Münsterberg 1536-1542 and Duke of Oels. He also held the title of a Count of Glatz.- Life :...
    
     (1512–1553), married to Elizabeth Kostka of Postupitz

She died in 1541 and was buried alongside her husband in the parish church of St. Anna in Frankenstein

Zabkowice Slaskie

Ząbkowice Śląskie is a town in Lower Silesian Voivodeship in south-western Poland. It is the seat of Ząbkowice Śląskie County, and of the smaller administrative district called Gmina Ząbkowice Śląskie....

.