Helena, Mother of Constantine - A Jewess?

Speculations on the question

It’s more likely than you think…

Was Constantine the Great's mom jewish? Is it possible that the world-historical shift of the Roman Empire from their native Pagan faith to the foreign Jewish messianic religion of Christianity was brought about by a half-jewish Emperor? The following is my own amateurish opinion... however, I believe there is some good reason to consider it a serious possibility.

Although modern mainstream historians (according to wikipedia and other sources) deny this possibility, the German scholar Joseph Vogt, who was considered one of the leading 20th century experts on Roman history and even specialized in the era of Constantine, believed Helena Augusta, mother of Constantine, was Jewish. In this article, we will take a look at why.