Person
John William, Duke of Jülich-Cleves-Berg
John William was the last Duke of Jülich-Cleves-Berg, ruling from 1592. He suffered from mental illness, and his court was torn by factions. His death without children in 1609 set off the War of the Jülich Succession between Brandenburg and Palatinate-Neuburg, which threatened a European war before the duchies were partitioned.

Mentioned in 2 state histories
See also
Cite this entry
- APA
- The Epoch Institute. (2026). John William, Duke of Jülich-Cleves-Berg. In The Epoch Institute Encyclopedia. https://the-epoch-institute.org/encyclopedia/john-william-duke-of-julich-cleves-berg
- MLA
- “John William, Duke of Jülich-Cleves-Berg.” The Epoch Institute Encyclopedia, The Epoch Institute, 2026, https://the-epoch-institute.org/encyclopedia/john-william-duke-of-julich-cleves-berg. Accessed .
- Chicago
- The Epoch Institute. “John William, Duke of Jülich-Cleves-Berg.” The Epoch Institute Encyclopedia. 2026. https://the-epoch-institute.org/encyclopedia/john-william-duke-of-julich-cleves-berg.
- Harvard
- The Epoch Institute (2026) ‘John William, Duke of Jülich-Cleves-Berg’, The Epoch Institute Encyclopedia. Available at: https://the-epoch-institute.org/encyclopedia/john-william-duke-of-julich-cleves-berg (Accessed: ).
Last reviewed October 2026Random entry ↻