It sounds like it could be a chapter straight from the pages of the international best-seller The Da Vinci Code. Just like Dan Brown's book, the dusty document contains long forgotten insights into the history and relationships of Jesus Christ.
Now scholars at a Welsh college believe they have unearthed their own version of the Da Vinci code with the discovery of a 400-year-old book.
Entitled The Genealogy of Jesus Christ, it has spent the past 70 years locked in the dusty depths of the National Library of Wales in Aberystwyth. Peter Hogan, the warden at Llandovery College, happened on the school's lost document while trawling through archives.
He said, "I was absolutely flabbergasted. There isn't anybody I know who hasn't read The Da Vinci Code, and we've found the sort of thing that would have been a major part of the plot."
A spokesman for Catholic newspaper The Tablet believed the find could be extremely significant.
You can read more about this story here.
