What is the name of the historical county, later duchy of the Holy Roman Empire, located in the Low Countries that  Adolf van Nieuwenaar worked for in the  Eighty Years' War?
Guelders Guelders or Gueldres (Dutch: "Gelre" , German: "Geldern" ) is a historical county, later duchy of the Holy Roman Empire, located in the Low Countries.
Lordship of Diepholz The County of Diepholz (West Low German: "Diepholt"), that was first known as the Lordship of Diepholz, was a territory in the Holy Roman Empire in the Lower-Rhenish-Westphalian Circle. It was ruled by the Noble Lords, later Counts, of Diepholz from the late tenth century until 1585, when it was mostly incorporated into the Duchy of Brunswick-Lüneburg.