I'd love to see a citation/source for the claim that the first 15 popes were Jewish

I don't even get how that is relevant. Apparently, the guy is a Jew, and he wants to eliminate Catholicism because the first 15 popes were ethnically Jewish? What?

I assume the name mentioned is Eusebius of Caesarea, as I think the pronunciation matches and he has been called the father of ecclesiastical history.

I thought so as well, though at first I thought he said 'Vesuvius'. That is not how you pronounce Eusebius, but of course, this tard doesn't know how to pronounce anything.

Maybe it's in there, or in one of Eusebius's other works, or maybe it's supposed to be a different author entirely, but given that I can't turn up anything online that even comes close to supporting the claim, I need a source

Or maybe it was made up by a retard who thinks that Jesus wrote the Gospels, and that the Gospel of Nicodemus is in any way reliable.