“ One who knowingly harbors a felon becomes at common law an accessory to the crime, while the intentional harborer of one who has committed a misdemeanor is himself guilty of a misdemeanor. An innkeeper who is accustomed to harbor thieves is indictable at common law for maintaining a public nuisance. ”

“ Harboring the wife of another after notice from the husband not to do so is an actionable wrong against him, unless such act is a proper one for her protection. So the harboring of an apprentice or servant, with knowledge of the latter's obligation to his master, is an actionable tort at common law. ”