The Landgraviate of Hesse-Marburg was a German landgraviate, and independent principality, within the Holy Roman Empire, that existed between 1485 and 1500, and between 1567 and 1604/1650. It consisted of the city of Marburg and the surrounding towns of Gießen, Nidda and Eppstein, approximately what's today called Oberhessen(Upper Hesse). The area had been a semi-independent county under the counts Giso or Gisonen since the 11th century, which at their extinction fell to the Landgraves of… (More on Hesse-marburg)