The Good man is a good financier ...

The good man is a good financier. That evil man is also a bad financier, just as Metrodorus has demonstrated. - Philodemus of Gadara

In addition, it’s possible to resume some of Metrodorus’ theses concerning both the sources from which one may procure wealth, as well as the manner by which one may preserve it. However, he constantly accentuated as a matter of fact, that to meet occasionally with perturbations, worries and troubles is much more advantageous for the best mode of life possible than the opposite choice. - Philodemus

The word exists in both French and English as financier (noun) so it must have entered English when Normandie ruled England

And this is consistent with the designation of Metrodorus as an administrator in his biographies.

Meaning:

Quote

A person concerned with the management of large amounts of money on behalf of governments or other large organizations  

It’s in the ‘Metrodorus’ portion of Les Epicuriens. SHortly after the Epicurus portion.