Bolesław IV of Legnica
Bolesław IV of Legnica( ca. 1349 – 3/4 March 1394) was a Duke of Legnica since 1364( nominally; together with his brothers).
He was the third son of Wenceslaus I, Duke of Legnica by his wife Anna, daughter of Casimir I, Duke of Cieszyn.
Karolina of Legnica-Brieg
Karolina of Legnica-Brieg-Wohlau (2 December 1652 in Brzeg – 24 December 1707 in Wrocław), was a Silesian noble, duchess of Legnica, Brzeg and Wołów and the last member of the Silesian Piasts dynasty.
She was the eldest daughter of Christian, Duke of Brieg and Louise of Anhalt-Dessau (daughter of John Casimir, Prince of Anhalt-Dessau).
After the death of her father, she married secretly without the knowledge of her mother on 14 July 1672 to Duke Frederick von Schleswig-Holstein-Sonderburg-Wiesenburg (b. 1651 – d. 1724) and also became the duchess of Schleswig-Holstein-Sonderburg-Wiesenburg.
Frederick III of Legnica
Frederick III, Duke of Legnica  (22 February 1520 – 15 December 1570) was a Duke of Legnica during 1547–1551 and 1556–1559 (both times was deposed by Habsburgs Emperors Charles V and Ferdinand I).
He was the eldest son of Frederick II, Duke of Legnica-Brzeg, by his second wife Sophie, daughter of Frederick I, Margrave of Brandenburg-Ansbach.
Joachim Frederick of Brieg
Joachim Frederick of( Legnica) Brieg( 29 September
1550 – Brzeg, 25 March 1602), was a Duke of Oława and Wołów( since 1586 with his brother as a co-ruler until 1592) and Brzeg( since 1595) and Legnica( since 1596).
He was the eldest son of George II the Pious, Duke of Brzeg- Oława- Wołów, by his wife Barbara, daughter of Joachim II Hector, Elector of Brandenburg.
He was named after both grandfathers: Joachim II Hector and Frederick II of Legnica.
Henry VIII of Legnica
Henry VIII of Legnica( ca. 1355 – 12 December 1398) was a Duke of Legnica since 1364( nominally and together with his brothers) and Bishop of Włocławek since 1389 until his death.
He was the fourth of Wenceslaus I, Duke of Legnica, by his wife Anna, daughter of Casimir I, Duke of Cieszyn.
Frederick II of Legnica
Frederick II, Duke of Legnica( 12 February 1480 – 17 September 1547), also known as the Great of Legnica, was a Duke of Legnica from 1488( until 1495 and 1505 with his brothers), of Brzeg from 1521.
The most notorious of all Legnica Piast rulers, thanks to his excellent financial politics his Duchy was expanded to the Oder River, and he became the founder of the Duchy of Legnica- Wołów- Brzeg.
He was the second son of Frederick I, Duke of Chojnów- Oława- Legnica- Brzeg- Lubin, by his wife Ludmila, daughter of George of Poděbrady, King of Bohemia.
Louise of Anhalt-Dessau
Louise of Anhalt-Dessau (10 February 1631 in Dessau – 25 April 1680 in Ohlau), was a German princess (German: "Fürstin") of the House of Ascania in the branch of Anhalt-Dessau and by marriage Duchess of Legnica, Brzeg, Wołów, and Oława.
She was the fifth child (but third daughter) of John Casimir, Prince of Anhalt-Dessau, by his first wife Agnes, daughter of Maurice, Landgrave of Hesse-Kassel.
Wenceslaus I of Legnica
Wenceslaus I, Duke of Legnica( ca. 1318 – 2 June 1364) was a Duke of Namysłów from 1338 and of Legnica- Brieg from 1342 until his death, but with further divisions with his brother Louis I.
He was the eldest son of Bolesław III the Generous, Duke of Legnica- Brieg by his first wife, Margaret of Bohemia.
He was named after his maternal grandfather, King Wenceslaus II of Bohemia.
Giuseppe Gonzaga, Duke of Guastalla
Giuseppe Gonzaga( 20 March 1690 – 16 August 1746) was the last Duke of Guastalla.
He was the second son of Vincenzo Gonzaga, Duke of Guastalla and Maria Vittoria Gonzaga, and was mentally handicapped .<br>
When his elder brother Duke Antonio Ferrante died in an accident in 1729, Giuseppe was the only remaining male member of the Gonzaga family, so he became Duke.
Giuseppe would probably never have married, but when he became Duke a marriage was arranged in 1731 with the sixteen- year- old Eleonore von Holstein( 1715 – 1760), daughter of Duke Leopold of Schleswig- Holstein- Sonderburg- Wiesenburg, and granddaughter of Karolina of Legnica- Brieg.
The marriage remained childless.
During the War of Polish Succession the Duchy was occupied by the French for four years, between 1734 and 1738.
When Giuseppe Gonzaga died in 1746, Italy was again a theater of war in the War of Austrian Succession, and the Duchy was annexed by Austria.
Two years later, in the Treaty of Aix- La- Chapelle, Guastalla was ceded to the Spanish, together with the Duchy of Parma and Piacenza, with which it was merged.
Henry XI of Legnica
Henry XI of Legnica( Schloss Liegnitz, 23 February
1539 – Krakow, 3 March 1588), was a thrice Duke of Legnica: 1551- 1556( under regency), 1559 – 1576 and 1580- 1581.
He was the eldest son of Frederick III, Duke of Legnica, by his wife Katharina, daughter of Henry V, Duke of Mecklenburg- Schwerin.

Question: Where did Karolina Of Legnica-Brieg's mother die?
Answer: Oława