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?
Adolf van Nieuwenaar Adolf van Nieuwenaar, Count of Limburg and Moers (also: Adolf von Neuenahr) (c. 1545 – 18 October 1589) was a statesman and soldier, who was stadtholder of Overijssel, Guelders and Utrecht for the States-General of the Netherlands during the Eighty Years' War.
French Wars of Religion The French Wars of Religion, or Huguenot Wars of the 16th century, are names for a period of civil infighting, military operations and religious war primarily fought between Roman Catholics and Huguenots (Reformed Protestants) in the Kingdom of France. The conflict involved several independent principalities: the Duchy of Lorraine, the Duchy of Savoy, the Kingdom of Navarre, and parts of Burgundy which have since been incorporated into France. And it occasionally spilled beyond the French region, for instance in the war with Spain, from 1595-1598, into northern Italy, some of the German states of the Holy Roman Empire, and the Duchy of Burgundy possessions in the Low Countries.