Which preposition to use with eloge

of Occurrences 2%

[Greek: epi], upon, and [Greek: taphios], sepulchre, being engraved on tombs, in honour or memory of the deceased, and generally containing some eloge of his virtues or good qualities.

on Occurrences 1%

Then Arago reads an Eloge on "old Ampère," of which I only remark that it lasted two hours and a half.

Which preposition to use with  eloge