[2] The prologue contains a famous verse on the declining pagan faith in Ireland: Senchatraig na ngente/iman roerud rudad/itfossa can adrad/amail Lathrach Lugdach.
which reads in translation as The old cities of the pagans to which length of occupation has refused are deserts without worship like Lugaid's House-site.
Ó Riain has shown that the general sections of the Martyrology of Tallaght are based on a Northumbrian copy of the Martyrologium Hieronymianum.
In the late 18th century they passed on to St Isidore's College, Rome, and in 1872 were returned from there to Ireland, to be kept first in the Franciscan convent at Merchant's Quay, Dublin, later at Dun Mhuire, Killiney.
[10] This 12th-century manuscript is now lacking the text for some one hundred and fifty days of the calendar, but what is missing is supplied by Michael O'Clery's 17th-century transcript.