John of Saxony is the name of: John the Old Saxon an Anglo-Saxon scholar and abbot of Athelney John I, Duke of Saxony (1249–1285, Duke 1260–1282) John of Saxony (astronomer) (fl. 1327–1355). John, Elector of Saxony (1468–1532). John, King of Saxony (1801–1873, King of Saxony, 1854–1873).