The book catalogues the running of the City from 1356 to 1649, and is written in several different languages. In his virtual tour of Waterford Treasures on The Big Breakfast Blaa, Eamonn tells us that this is an extremely important book to still have intact, and that we were very fortunate that it was translated in 2007 by the late Dr Niall Byrne.
If you like Eamonn's slots with us on The Big Breakfast Blaa - have a listen here, to his discussion about a painting of the City from the 18th century.
And below is his chat with us about the Great Parchment Book...