Bamberger Dom, Fürstenpforte  ca. 1230

Guilielmus Durantis, Speculum iuris (Basel: 1574) Pars III, De inquisitione § Vltimo (p. 42):

Abbas non privabit eum defensione, quae excommunicato, et etiam diabolo, si in iudicio adesset, non negaretur. (The abbot shall not take from the reus his defense; even the devil, if he would be accused of a crime, would not be denied a defense).