"Landgrave Louis IV of Hesse-Marburg (27 May 1537 – 9 October 1604) was the son of Landgrave Philip I of Hesse and his wife Christine of Saxony. After the death of his father in 1567, Hesse was divided among his sons and Louis received Hesse-Marburg (Upper Hesse) including Marburg and Giessen.
Louis received his education at the court of Duke Christoph of Württemberg. He had the Marburg Castle renovated by his architect Ebert Baldewein. Wanting to enlarge his territory peacefully, he bought parts of the Fuldischen Mark in 1570 from the counts of Nassau-Saarbrücken and the rest in 1583 from the count of Nassau-Weilburg." - (en.wikipedia.org 05.11.2019)
