The Gradwitzes have attained their lands through a series of lawsuits.
Two generations before the present-day of the setting of "The Interlopers," Ulrich von Gradwitz, there were cases heard in the Courts which awarded Grandfather Gradwitz land taken from the Znaeyms. Nevertheless, the neighboring family of what the Gradwitzes has long considered "petty landowners" never accepted the rulings; consequently, they have continued to trespass and hunt on the land and cut trees and roam this property.
As the story begins, Gradwitz searches for Georg Znaeym who has been trespassing upon the Gradwitz property and committing several violations such as snatching game and trespassing. In fact, his hatred for Znaeym is so deep that Gradwitz patrols his land for the "forest-thief" in order to be able to kill his mortal enemy. Perhaps because of the nature of the case and the Court rulings, the enmity between the two men is vituperative.