nearness of blood

References in classic literature ?
As Phoebe curtsied in reply, the Judge bent forward, with the pardonable and even praiseworthy purpose--considering the nearness of blood and the difference of age--of bestowing on his young relative a kiss of acknowledged kindred and natural affection.
Giovanni entered next, justifying his incestuous desire for Annabella by reading from Coeffeteau that "resemblance breedeth love, so that men commonly love those that are allied unto them in nearness of blood.