Duff_(surname)
Duff (surname)
Surname list
The surname Duff has several origins. In some cases, it is an Anglicised form of the Gaelic Ó Duibh ("descendant of Dubh"), Mac Giolla Duibh ("son of the servant of Dubh"), Mac Duibh ("son of Dubh"). The surname Duff is also sometimes a short form of Duffin (when of Gaelic origin), and MacElduff (from Mac Giolla Duibh), and Duffy (a name with multiple origins).[1]
The Gaelic dubh ("black", "dark") is a word-element which forms a part of several Gaelic names.[1]
Le Duff is the gallicized variant of the Breton surname An Du which means The Black.