James, Lord Boyd
James Boyd, 15th Earl of Errol (1726-1778) was the son of Lady Anne Livingston and William Boyd, 4th Earl of Kilmarnock. He was commissioned in 21st Regiment of Foot and fought on the Government side at Culloden. After the execution of his father he claimed his father's estates. He officiated as Hereditary Grand Constable at the coronation of George III in 1761.