John George IV was Elector of Saxony from 1691 to 1694.
He belonged to the Albertine branch of the House of Wettin and was the eldest son of John George III, Elector of Saxony and Anna Sophie of Denmark. Wikipedia
Born: October 18, 1668, Dresden, Germany
Died: April 27, 1694 (age 25 years), Dresden, Germany
Siblings: Augustus II the Strong
Spouse: Princess Eleonore Erdmuthe of Saxe-Eisenach (m. 1692–1694)
Children: Wilhelmina Maria Frederica of Rochlitz
Great-grandparents: John George I, Elector of Saxony, Magdalene Sibylle of Prussia, Christian IV of Denmark, and more