and from 1770 to 1778, he was Lord of Police for Scotland. Personal life On 15 September 1749, he married Rebecca Lockhart, the daughter of Alexander Lockhart, Lord Covington. Before her death in 1761, they were the parents of one daughter: Lady Mary Hay (b. 1754), who married Gen. John Scott of Balcomie in 1770, divorced in 1771. In 1762, he married Isabella Carr (1747–1808), daughter of Sir William Carr of Etal, Northumberland. Together, they were the parents of twelve children, including: Lady Charlotte Hay (1763–1800), who married Rev. William Holwell, Vicar of Menheniot, in 1797. Lady Isabella Anne Hay (1765–1793) Lady Augusta Hay (1766–1822), who married George Boyle, 4th Earl of Glasgow. George Hay, 16th Earl of Erroll (1767–1798), who married Elizabeth Jemima Blake, the sister of Joseph Blake, 1st Baron Wallscourt. Lady Harriet Jane Hay (1768–1812) Lady Margaret Hay (1769–1832), who married Charles Cameron in 1789. Lady Maria Elizabeth Hay (1771–1804), who married Rev. George Moore, Rector of Wrotham, eldest son of Most. Rev. John Moore, Archbishop of Canterbury, in 1795. William Hay, 17th Earl of Erroll (1772–1819), who married three times and had eleven children. Lady Frances Hay (1773–1806) Lady Flaminia Hay (1774–1821), who married Capt. George James in 1809. Lady Jemima Hay (1776–1822) Hon. James Hay (d. 1797) Lord Erroll died on 3 July 1778 at Callendar House, aged fifty-two, and was succeeded by his eldest son, George. His widow died 3 November 1808. Descendants Lord Erroll's grandson, William Hay, 18th Earl of Erroll, was created Baron Kilmarnock in the peerage of the United Kingdom in 1831. Ancestry External links Footnotes References 15 Rectors of the University of Glasgow 1726 births 1778 deaths Scottish representative peers