Before he died, Raymond Rogers withdrew his belief that the Shroud was from the Middle Ages. As a result of questions raised by research provided by Sue Benford, he went back and did more testing. He confirmed that the carbon dating was performed on a portion of the Shroud that was repaired.
And the repair had to date from the Middle Ages where a report arises about the shroud being repaired. In short, the shroud is easily older than the material introduced in the repaired part!
Ray Rogers never believed the Shroud was from the middle ages.