 The manuscript tradition of Kilvington’s works is complex. The question on the Ethics and on the Sentences are often edited in different ways, with many omissions and corrections by scribes (Michałowska 2011b). The most complicated, however, is the tradition of his questions on Aristotles’ libri naturales, that is, on the On generation and corruption and the Physics. It testifies perfectly well to the dispersion of these works, which probably occurred shortly after the questions were written. The reconstruction of these commentaries was possible thanks to cross references to be found in the questions (Jung &amp; Podkoński 2020: 16–17).