an Entity references as follows:
Rudolf II, Duke of Saxe-Wittenberg, nicknamed Rudolf the Blind, (c. 1307 – 6 December 1370 in Wittenberg) was a member of the House of Ascania. He was Elector of Saxony and Duke of Saxe-Wittenberg from 1356 until his death. He was the eldest son of Duke Rudolf I of Saxe-Wittenberg and his wife, Judith of Brandenburg-Salzwedel.