Duffy Family History
Duffy Name Meaning
Irish:: shortened Anglicized form of Gaelic Ó Dubhthaigh ‘descendant of Dubhthach’ a byname derived from dubh ‘black’ (see Duff ). This name was borne by a 6th-century Christian saint who was archbishop of Armagh. shortened Anglicized form of Gaelic Mac Dhuibhshíthe ‘son of Duibhshíth’ a personal name composed of the elements dubh ‘black’ (see Duff ) + síth ‘peace’.
Source: Dictionary of American Family Names 2nd edition, 2022