The Campbell of Auchinbreck (also spelled Auchenbreck) family was founded by Duncan Campbell in Glassary, Argyll, Scotland. He was the son of Lord Duncan Campbell, first Lord Campbell of the Clan Campbell, by his second wife Margaret, daughter of Sir John Stewart of Blackhall, the illegitimate son of King Robert III of Scotland. The family of the Lords Campbell later became Dukes of Argyll, and remain chiefs of Clan Campbell. Duncan Campbell, as a grandson of King Robert III, received a considerable estate confirmed by royal charter dated 19 June 1452. The family remained at their estate of Auchinbreck, from which they took their title, until 1641. The Campbells of Auchinbreck were commissioned to provide military training and were used by the Earls of Argyll as military support. In 1628 the then head of the family of Campbells in Auchinbreck received a baronetcy, which included a grant of North American land in Nova Scotia.
