Commentary on the Hexameron
The Commentary on the Hexameron of Pseudo-Eustathius is an anonymous commentary on the Genesis creation narrative written in Greek between 375 and 500 AD. More than 26 medieval manuscripts exist containing it, all of which give Eustathius of Antioch as the author. The work  contains rather more material than a typical commentary on creation, including historical material down to the time of Alexander the Great, all excerpted from earlier Christian writers. Consequently, it has been given the Latin title Liber chronicorum ('book of chronicles'). The Commentary includes extracts from the lost writings of Alexander Polyhistor, and the author appears to have had direct access to copies of Polyhistor.