Danzaemon had jurisdiction not only over the subordinates within the ruling area but the hisabetsumin living in the tenryo (shogunal demesnes) in the provinces around the Kanto region, and those who committed crimes were tried by a private court called 'shirasu' (literally the white sandbar) set up in the premise, and locked up in a prison also constructed within the premise.
弾左衛門は支配地内の配下は勿論のこと、関東近国の天領の被差別民についても裁判権を持っており、罪を犯したものは屋敷内の白州で裁きを受け、屋敷内に設けられた牢屋に入れられた。