Note 22 — HISTORICAL RECORD OF THE SECOND,
Reading edition
David, first Earl of Portmore, K.T., was son and heir of Sir Alexander Robertson, Bart., of Strowan, in the county of Perth, who assumed the name of Colyear, and who was Colonel of one of the regiments of the Scots' Brigade in the service of Holland.
David Colyear engaged as a volunteer with the Dutch forces under the Prince of Orange, in 1674, and came to England with his Highness at the Revolution in 1688. He served, with great reputation, in Ireland and in Flanders, and was created Baron Portmore and Blackness in 1699. In 1703 he was created Baron Colyear, Viscount Milsington, and Earl of Portmore. He was promoted to the rank of General in 1710; in the same year he was appointed Commander of the Forces in Scotland, and was allowed to sell his colonelcy of the Queen's Regiment. He was appointed Governor of Gibraltar in 1713, and in 1714 he succeeded the Earl of Stair as Colonel of the Second, or Royal North British Dragoons. He died at Gibraltar, on the 2nd of January, 1730.