The unit concluded that shroud was made between 1260 and 1390.
Ruth Gledhill reports in Christian Today, in an article titled, Results on investigations into fragments of the True Cross coming soon:
Oxford University has launched a centre to study ancient Christian relics such as bones claimed to be those of St John the Evangelist, John the Baptist and fragments purported to be from the true Cross.
The new centre will be based at Keble College’s Advanced Studies Centre.
Researchers will use radiocarbon dating, genetics and theology to draw together research and findings from around the world to try and establish the authenticity or otherwise of some of the world’s most famous relics.
Some archaeologists already believe they have found pieces of the True Cross on which Jesus was crucified
The centre follows advances in science which now allow higher precision radiocarbon dating and DNA analysis that establishes common ancestries and likely geographic origin of individuals.
Oxford has led the field in this area. Researchers used the Radiocarbon Accelerator Unit to date the Shroud of Turin, believed by some to be the burial cloth of Christ. The unit concluded that shroud was made between 1260 and 1390.
Professor Thomas Higham of Oxford also led a team dating six small bone fragments found on an island in Bulgaria named Sveti Ivan, translated as St John, which turned out to be the bones were of a man who lived in the Middle East at the same time as Jesus.
In 2014, the team also analysed remains of a small finger bone attributed to John the Baptist that was associated with the famous Guelph Treasure. The sample from the finger bone was dated to 660-770 AD, which meant it was too young for St John the Baptist.
More recent work has included analysis of remains thought to be of St Luke, St David, and the True Cross, on which Jesus was crucified. The results of these investigations have yet to be published.
And there is more to the article.