John George I, Duke of Saxe-Weissenfels was a German nobleman born on March 6, 1668. He was a member of the House of Wettin and ruled the duchy of Saxe-Weissenfels from 1712 until his death in 1736. His reign was marked by efforts to strengthen the duchy's economy and cultural development. John George I was the son of John George I, Elector of Saxony and Anna Sophie of Denmark. He had a keen interest in the arts and supported various cultural initiatives during his rule. He passed away on June 21, 1736, leaving behind a legacy of patronage in the region.