Earl of Kilmarnock

The title Earl of Kilmarnock was created in the peerage of Scotland in 1661 for William Boyd, 10th Lord Boyd. That title was also created in the Scottish peerage in 1454 for Robert Boyd, Great Chamberlain of Scotland. Both titles were forfeit in 1746.

Thomas Boyd, the elder son of Robert Boyd, 1st Lord Boyd—and father of the second one—was created Earl of Arran in 1467, but both titles were forfeit in 1469. Considerable confusion exists over the numbing of the Lord Boyds, the numbering in this article is the same as that used in the Oxford Dictionary of National Biography.

The 4th Earl of Kilmarnock was the father of the 15th Earl of Erroll. The Kilmarnock title was revived in 1831 for the latter's grandson, William George Hay, 18th Earl of Erroll, who was created Baron Kilmarnock in the Peerage of the United Kingdom. Since 1941 this title is a separate peerage.

Lords Boyd (1454)

• Robert Boyd, 1st Lord Boyd (died 1482) created a peer between 1451–1454
• James Boyd, 2nd Lord Boyd (c. 1469–1484) acceded Lordship 1482
• Alexander Boyd, 3rd Lord Boyd (died after 1508), acceded Lordship 1484
• Robert Boyd, 4th Lord Boyd (died 1557 or 1558), confirmed by a charter to the Lordship 1545 or 1546
• Robert Boyd, 5th Lord Boyd (c. 1517–1590), acceded Lordship 1558
• Thomas Boyd, 6th Lord Boyd (c. 1547–1611), acceded Lordship 1590
• Robert Boyd, 7th Lord Boyd (1595–1628), acceded Lordship 1611
• Robert Boyd, 8th Lord Boyd (c.......
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