Sir David Dunbar, of Cumnock

In 1375, George, tenth Earl of March, resigned in favour of David Dunbar the very extensive territories of Cumnock, Blantyre, and other lands. According to Sir Robert Douglas, in his Baronage, David was a son of a George Dunbar, an alleged son of the eighth Earl, but of this no evidence has been found. In the charter of 1375 no relationship is stated, and no direct proof has been discovered, but from the very large grant thus made the barony of Cumnock alone embracing 50,000 acres of land there is a presumption that David was a brother of Earl George. He appears further in three writs of uncertain date, but confirmed by Robert, Duke of Albany, in 1411, as Sir David Dunbar of Cumnock, knight, and had then a son and heir, Sir Patrick of Dunbar, also a knight, who was the real granter of certain lands and wadsets to Gilbert Grierson of Arde.

Source: "The Scots Peerage" Vol 3, page 261.
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