Rabbeinu Yitzchak b"R Yosef on Bereishis רבינו יצחק ב"ר יוסף - בראשית

The commentary of Rabbeinu Chananel on the Torah, published in various forms over the generations, was created using this manuscript. However, as one can see in the introduction, based on this manuscript we are able to improve the previous editions of the Peirush Rabbeinu Chananel.] As one can see in the footnotes, he is clearly a source for Rabbeinu Bachya, Rabbeinu Yehoshua ibn Shauib (whose commentary on the Torah has numerous editions with great textual variations and should merit a new edition), and the Peirush referred to as Sodos HaRamban meyuchas to Rabbi Meir ibn Sula (the introduction and addendum to the work goes to great length explaining the relationship between the two works).