William IV of Jülich-Berg (9 January 1455 – 6 September 1511) was the last ruler of the Duchy of Jülich-Berg . Life [ edit] William was the son of Gerhard VII, Duke of Jülich-Berg and Sophie of Saxe-Lauenburg. When his father died in 1475, William became Duke of Jülich-Berg.
William IV, who became count in 1219, significantly enlarged the territory and in 1234 granted Jülich town privileges. By 1240 his territorial expansion created conflict on the eastern side of his territory with the Archbishop of Cologne Konrad von Hochstaden, whose troops devastated the city five years later.
Jakobe von Baden Antoinette de Lorraine His parents were William the Rich, Duke of Jülich-Cleves-Berg (1516–1592) and Maria of Austria (1531–1581), a daughter of Ferdinand I, Holy Roman Emperor and Anna of Bohemia and Hungary. He grew up and was educated in Xanten. Johann Wilhelm became Bishop of Münster.
- 28 May 1562
- 5 January 1592 –, 25 March 1609
- 25 March 1609 (aged 46)
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Guillermo IV de Jülich-Berg (9 de enero de 1455 - 6 de septiembre de 1511) fue el último gobernante del Ducado de Jülich-Berg. Gerhard VII, duque de Jülich-Berg Sophie de Saxe-Lauenburg . Cuando su padre murió en 1475, William se convirtió en duque de Jülich-Berg.