Wilhelmina Maria Frederica of Rochlitz

Countess of Rochlitz
Spouse(s) Count Świętosław Piotr Dunin


Fryderyk Piotr Dunin
Antonina Malczewski
Marianna Tomkowicz
Józefa Dunin

Full name

Wilhelmina Maria Frederica
Polish: Wilhelmina Maria Fryderyka
Noble family Wettin
Father John George IV, Elector of Saxony
Mother Magdalena Sibylla of Neidschutz
Born (1693-06-20)20 June 1693
Died After 1729

Wilhelmina Maria Frederica, Countess of Rochlitz[1] (Polish: Wilhelmina Maria Fryderyka; 20 June 1693 after 1729) was a Polish noblewoman of German descent. She was the illegitimate daughter of John George IV, Elector of Saxony, and Magdalene Sibylle, Countess of Rochlitz, his official mistress. Her parents, who may have been half-siblings, both died from smallpox soon after her birth, and she was raised in Poland at the royal court of her uncle and guardian, Augustus II the Strong of Poland.


Her mother's mother, Ursula Margaretha von Neitschütz, was a member of the noble Upper Lusatian family of Haugwitz and the wife of a Lusatian noble named Rudolf von Neitschütz. She had many lovers in her younger years, and one of them was the electoral prince of Saxony, John George, later Elector as John George III. Her eldest daughter, Magdalene Sibylle, called Billa, was officially recognized as the daughter of her husband but may have been the daughter of John George III. Later the Elector's son and successor, John George IV, began an affair with Billa, which his father tried to prevent by banishing Ursula and Billa from court, suggesting a fear of incest. However, when John George III died, his son lived openly with Billa and tried to marry her. Wilhelmina Maria Frederica was the product of their affair.


She was born in Frankfurt am Main and orphaned at less than a year old by both her parents' deaths from smallpox. For the first year of her life (until her father's death) she was in a way a stepsister of Caroline of Ansbach, future queen consort of Great Britain, being the daughter of Caroline's then-stepfather. Her first two names, Wilhelmina Maria, were given in honour of the King and Queen of England, William and Mary; however, contrary to popular assumption, the English monarchs were not her godparents.[2] Sir William Dutton Colt, the English envoy to Dresden since 1689,[3] was her actual godfather.[2] The name Frederica was given to please the Danish royal family.[2] (Frederick was the name of her grandmother, the Dowager Electress Anna Sophie's father, Frederick III of Denmark.) Her godfather having died when she was two months old,[3] she was raised at the royal court of her uncle and guardian, Augustus II the Strong, King of Poland.

In 1720 she married a Polish nobleman, Count Świętosław Piotr Dunin (died 1736), Castellan of Radom.[4] They had four or five children:[5]

Through her daughter Antonina, she was the great-grandmother of Polish romantic poet Antoni Malczewski.


  1. Wilhelmina Maria Frederica inherited her mother's title, Countess of Rochlitz. “As to the child’s status, she was heiress as of right to her mother, since the patent elevating Billa to countess applied also to her offspring, whether born in or out of wedlock. And she was also a legitimate daughter of John George, inasmuch as he considered himself married to Billa, as well as to Eleonore.” –Sharp, 37
  2. 1 2 3 Sharp, 37
  3. 1 2 thePeerage page for Sir William Dutton Colt
  4. Polska.pl - Augustus II gives the county Zator to Peter Dunin and Countess Frederica Rochlitz (Polish)
  5. Karwacki's forum - Zobacz temat - z pnia Piotra W?osta DUNINOWIE (Polish)


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