Williams and Russell said they think a man named Jaspar Gryffyth, a 16th-century owner of the book who copied his name in Hebrew onto the book, likely erased such "reactions." These verses and doodles would've been added to the manuscript over centuries as it was passed from one owner to another. "He fits the time frame for the erasures, which we know would have been in the late 16th century, but we can only speculate that he might have been the one to take it upon himself to 'cleanse' the manuscript," Williams told Live Science in an email.Using UV light and photo-editing software, Williams and Russell revealed glimpses of some of the erased doodles. For instance, page fol. 39v of the newly visible work includes ghostly faces and a line of text accompanying them, which date to the 14th or 15th century, Williams said. On the following page, fol. 40v, a full verse, possibly dating to the 13th century, came to light. "There is one more drawing so far that we are still working on," Williams said.
So preservationists don't only seek to pull of layers of paint and "restore" things like the Last Supper to their "original" state, now they seek to view addendum that were removed by ancient restorers/preservationists...restore
Keeps everybody busy.