| The Scottish surname, Cairnduff is a variant form of Carnduff, a rare surname of locative origin, deriving from the name of the place where the initial bearer once lived or held lands, thus affording him suitable means of identity in his local community. From time to time the surname was spelt Carnduff, Carnduf, Cairnduf, Cairnduffe, Cairnduff. the changes in spelling frequently occurred, even between father and sons. I have included some names which may be relevant due to locality and situation eg: Carduff, Cardiff. The family name is believed to be descended from the Strathclyde Britons, in the 16th and 17th centuries. It is believed the name derives from the Scottish Gaelic - Cnoc dubh - meaning black hill |