In his book The Commentaries on Proverbs of the Kimhi Family (Hebrew),
F. Talmage attributes the commentary on Proverbs contained in MS Vatican
Ebr. 89 to Rabbi David Kimhi (Radak).2 The manuscript itself ascribes
authorship to Joseph Kimhi, Radak’s father, although the elder Kimhi was
not its author, as the commentary is different from the known commentary
on Proverbs of Joseph Kimhi.3 An annotated full version of the text is presented
in Talmage’s book, alongside the commentaries of Joseph and Moses
Kimhi, with the supposition that it is in fact Radak’s commentary
Grunhaus, Naomi. (Autumn 2003). The commentary of Rabbi David Kimhi on Proverbs: A case of mistaken attribution. Journal of Jewish Studies 54(2): 311-327.
*This is constructed from limited available data and may be imprecise.