Did you know that Duffy is one of the most popular Irish names?
In Irish the Duffy surname is O'Dubhthaigh, from 'dubhthach' meaning dark, black or swarthy. The name was borne by a 6th Century saint who was also Archbishop of Armagh. The original homeland of the Duffys was Monaghan, where the surname is still very popular, they are also found in Donegal, Mayo and Roscommon.
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