Lets all go looking for the bones of 3 people born in the 1600's, who's life we know nothing about or where they even lived...not too likely to find the actual bones....
I’ve never read up on the subject but something tells me that by the year 300 there was already a thriving pilgrim hustling business in Judea, as Christianity by then was one of the biggest religions in the Roman Empire and people who could afford it wanted to visit the holy sites as much as pagan people wanted to visit temples, oracles, sybils, etc.
The “guides” in Jerusalem surely saw the pius Helena coming “a mile away,” as they say, and were only too happy to direct her to the sacred places which interested her and also “miraculously” stumbled upon a trove of relics from the life of Christ.
Helena was a nice, very sincere Christian lady, I’m sure. But she was probably a very eager client for the slicksters of Palestine who provided her with “acquisitions” that became supernaturally powerful items once placed in the possession of the Church.