Maurice, Prince of Orange
In February 1598, Walburga, wife of Adolf van Nieuwenaar, and last Countess of Limburg and Moers, gave the County of Moers, which included Krefeld, to Maurice, Prince of Orange. After her death in 1600, John William of Cleves took possession of these lands, but Maurice successfully defended his heritage in 1601. Krefeld and Moers would remain under the jurisdiction of the House of Orange and the Dutch Republic during the Dutch Golden Age. The growth of the town began in that century, partially because Krefeld was one of few towns spared the horrors of the Thirty Years' War (1618–1648). The town of Uerdingen, incorporated into Krefeld in the 20th century, was less fortunate, almost ceasing to exist, destroyed at the hands of troops from Hesse during the Thirty Years' War.