The papyrus in the lining of the Egyptian-style leather cover of the 1,200-year-old manuscript, “potentially represents the first tangible connection between early Irish Christianity and the Middle Eastern Coptic Church”, the Museum said.
“It is a finding that asks many questions and has confounded some of the accepted theories about the history of early Christianity in Ireland.”
Raghnall O Floinn, head of collections at the Museum, said the manuscript, now known as the “Faddan More Psalter”, was one of the top 10 archaeological discoveries in Ireland.
It was uncovered four years ago by a man using a mechanical digger to harvest peat near Birr in County Tipperary, but analysis has only just been completed.
O Floinn told AFP the illuminated vellum manuscript encased in the leather binding dated from the 8th century but it was not known when or why it ended up in the bog where it was preserved by the chemicals in the peat.
“It appears the manuscript’s leather binding came from Egypt. The question is whether the papyrus came with the cover or if it was added.