Wouldn't the Bulgarian author's suggestion be all but a linear approach ? or otherwise being based on strong evidence or scholarship reasoning ...

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The popular (that not born) name of Jesus, a term Latinized from the Greek, doesn't feature the H after the I.
Unless we consider its translation to archaic english, which i am afraid would make it a longer shot in this situation.
Also the allusion to his virginity wasn't currently called upon inscriptions, instead, that of Mary, as we all know to be mentioned in countless situations.
But then again, he must have his reasons