Mother Maria of Austria | Died 1628, Gunzburg, Germany | |
Father William, Duke of Julich-Cleves-Berg Born 26 August 1557Cleves ( 1557-08-26 ) Buried Capuchin Church in Gunzburg Name Sibylle Julich-Cleves-Berg Role William, Duke of Julich-Cleves-Berg\'s daughter Parents William, Duke of Julich-Cleves-Berg, Maria of Austria, Duchess of Julich-Cleves-Berg Grandparents Ferdinand I, Holy Roman Emperor Great-grandparents Joanna of Castile, Philip I of Castile Similar People William - Duke of Julich‑Cleves‑Berg, Anne of Bohemia and Hung, Jeanne d\'Albret, Catherine de Bourbon, Henry IV of France |
Sibylle of Jülich-Cleves-Berg, Margravine of Burgau (26 August 1557 in Cleves – 1628 in Günzburg) was the daughter of Duke William the Rich and his second wife, Archduchess Maria of Austria.

Her brother John William inherited the United Duchies of Jülich-Cleves-Berg in 1592. After he had developed a mental illness, a power struggle broke out at court between Sibylle and her sister-in-law Jakobea of Baden. Sibylle won, and imprisoned Jakobea. Sibylle may also have been partially responsible for Jakobea's violent death in 1597.
In 1601, Sibylle married Margrave Charles of Burgau. In 1610, the couple moved into the residence at Günzburg. Here, she entertained a feudal court, even after her husband died in 1618. She acted in particular as patron of music.
Sibylle died in 1628 and was buried next to her husband in the Capuchin Church in Günzburg. When the church was demolished, her remains were transferred to the St. Martin's Church, also in Günzburg.