his father James, Lord Boyd, in the lordship and barony of Kilmarnock which included the 40 pound land of the old extent and barony of Grougar [NAS. Retours, Ayr, 473]. Charles II created him Earl of Kilmarnock in 1661. Lord Boyd was a Commissioner of Excise for Ayr, a Justice of the Peace for Lanark, Dumbarton and Ayr. He married Lady Jean Cunningham, eldest daughter of William Cunningham, 9th Earl of Glencairn and they had five sons and three daughters of whom William succeeded his father when he died in March 1692. On 11 August 1682, William, Lord Boyd, eldest son of William, Earl of Kilmarnock, was granted the lands of Kilmarnock [RGS.68.140]. On 20 July 1699, William, 3rd Earl of Kilmarnock, was served heir to his father William, 2nd Earl of Kilmarnock, in various lands including the above lands in the barony of Grougar [NAS. Retours, Ayr, 698]. The 3rd Earl voted for the Union with England in 1707 and was a staunch Hanoverian. He raised 500 men to oppose the Jacobites in 1715. He died on 22 November 1717 and was succeeded by his son William. William Boyd, 4th Earl of Kilmarnock, was Grand Master Mason of Scotland in 1742. He, unlike his father, was a Jacobite and fought for Bonnie Prince Charlie with the rank of General and commander of the Horse Grenadier Guards. The Earl was captured at the Battle of Culloden in 1746 and later executed in London. William Boyd, Earl of Kilmarnock, was executed as a Jacobite rebel in 1748, and his titles and lands in Ayrshire, Stirlingshire, and West Lothian were forfeited to the Crown on account of his treason. His son and heir James, Lord Boyd, who had fought for King George at the Battle of Culloden managed to regain some of the forfeited lands but he sold them in 1758. Lord Boyd was Grand Master Mason of Scotland in 1751. The titles and lands of the Jacobite aristocrats and landowners who had supported and participated in the Jacobite rising of 1745 were forfeited to the Crown and the lands were subsequently sold off to speculators, one of whom was Sir George Colebrooke. Sir George Colebrooke, born 1729, was Chairman of the East India Company, a merchant banker and a Member of Parliament. He was also a land speculator in New England, the Ohio Valley, Scotland and the West Indies, and also