A highland clan Cockburn here though the Scot’s say Co’burn and Americans write it as Coburn....Old American linage from New York that settled Colorado just post the Civil War...There used to be a Colburn, Colorado zip code.
The McDuffies came from the island of Colonsay in the Hebrides. It is considered part of the Highlands. The Clan history goes all the way back to the McAlpins.