sentences:  Van der Kemp and van der Capellen argued that these feudal rights were arbitrarily applied and even unlawful, thus bringing them into conflict with the drosten and the Prince of Orange, who derived the rights of his noble position from such things.In 1782, he married a daughter of a mayor of Nijmegen.In 1783 Van der Kemp moved to Wijk bij Duurstede and became the leader of the local patriots.