The accompanying text in 'The Clans of the Scottish Highlands' by James Logan begins as follows: "CLANN SHINCLAIR - THE SINCLAIRS It has been maintained that the Sinclairs are not, strictly speaking, a Gaëlic clan, the surname being originally from France. William, son of the Comte de Saint Clair, a relative of the Conqueror, who came over with him in 1066, settled in Scotland soon afterwards, and was progenitor of all of the name in that country. The ancient Earls of Caithness were, however, an original race, the first recorded of whom is Dungald, who flourished in 875, and Sir William Sinclair, of Roslin, which was the first possession of those of the name in Scotland, having married a daughter of the Earl of Strathern and Caithness, by this early connexion with a Highland district, and holding so high a feudal position, they have fully acquired all that confers on them the rights of chiefship."