The very first Journal of the Kilkenny Archaeological Society "Old Kilkenny Review, Number 1 (1946–1947). January 1948" has an article about Ballyragget and its environs and states the belief that Domhnach Mór means Big Sunday and relates to the fact that thousands of people congregated at the now ruined church in Donoughmore for its opening on a Sunday and the name stuck.
Backed by the British dairy giant Unigate, the new federation began the construction of a new multi-purpose dairy plant in Ballyragget, County Kilkenny.