The fire was in 1532, so it was after that date that the damaged cloth was cut away and the new cloth was added to the shroud.
https://www.youtube.com/watch?v=WNJPJ4JwHeE
The link is to a video of “The Face of Jesus”. I hope you like it .. it’s amazing.
Thanks, CyberAnt. I am aware of it. I posted the link to it last year. I'm a friend of Barrie Schworz who appears in it, and who was the principal light photographer of STURP in 1978.
The nuns of the Sisters of Poor Claire who did the patching after the fire and mounted it on the Holland Cloth could not have been the ones who did the patching on the damaged corner that was later tested for C-14. There skills are no where up to the levels of the French invisible Reweaving that was performed on that corner. Whoever did that work was an artisan of the highest caliber, someone who had been trained for a lifetime under a master weaver, a person at the peak of his or her trade. The French Invisible Reweaving was mostly used to repair very expensive tapestries and Arrases so that the repairs could not be seen from either side.
It is thought the patch had to have been a repair to a corner which had become frayed from too much handling and hanging by either tying to ropes or even nails over the centuries (when STURP got possession of the Shroud in 1978, it had been fastened to a plywood backing with thumbtacks for the two weeks it had been on public exhibition!). It was probably done late in the 16th Century by someone under the direction of the King of Italy who could afford to hire the best.