"Julius Francis (16 September 1641 – 30 September 1689) was duke of Saxe-Lauenburg between 1666 and 1689. He was a son of Duke Julius Henry and his third wife Anna Magdalena of Lobkowicz (1606 – 1668), daughter of Baron William the Younger Popel of Lobkowicz. He was officially known as Julius Franz von Sachsen, Engern und Westfalen." - (en.wikipedia.org 31.01.2020)
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