John III, Duke of Cleves [SEP] father
John III, Duke of Cleves
John III "the Peaceful", Duke of Cleves and Count of Mark (John III, Duke of Cleves; John I, Duke of Jülich-Berg; ; 10 November 1490 – 6 February 1538 or 1539) was a son of John II, Duke of Cleves and Mathilde of Hesse, daughter of Henry III, Landgrave of Upper Hesse.
John III became Regent of the United Duchies of Jülich-Cleves-Berg in 1521, and Lord of Ravensberg in 1528.
, Elector of Saxony in direct male line. He was also a fourth-generation descendant of his wife Sybille of Cleves who was daughter of John III, Duke of Cleves and older sister of both Anne of Cleves and Wilhelm, Duke of Jülich-Cleves-Berg.
The Elector was father to John William, Duke of Saxe-Weimar (1530–1573). He married Dorothea Susanne of Simmern, a daughter of Frederick III, Elector Palatine.
They were parents to John II, Duke of Saxe-Weimar (