The present province of Gelderland ( English also Guelders ) in the Netherlands occupies most of the area . However , the former duchy also included parts of the present Dutch province of Limburg and the territories in the present-day German state of North Rhine-Westphalia that were acquired by Prussia in 1713 . Though the present province of Gelderland ( English also Guelders ) in the Netherlands occupies most of the area , the former duchy also comprised parts of the actual Dutch province of Limburg as well as those territories in the present-day German state of North Rhine-Westphalia that were acquired by Prussia in 1713 .