Stuart, John, 3rd Earl of Bute (1713 -1792)
John Stuart was the eldest son of James Stuart, 2nd Earl of Bute, and Anne Campbell, daughter of the 1st Duke of Argyll. He succeeded his father 28 January 1723. He was educated at Eton. He married, 13 August 1736, Mary, only daughter of Edward Wortley Montagu, an alliance which eventually brought the vast Wortley estates to his descendants. Elected a representative peer for Scotland 1737 1741 and 1761 1780, he was Prime Minister and First Lord of the Treasury 1762 1763. He was probably the most unpopular premier ever. He had been the young King George III's tutor and an intimate friend of his mother's, and mobs fulminated against “the boot and the petticoat'” A Knight of the Garter, he was a patron of the arts and a distinguished botanist. There were auction sales of books from his library on 30 May 1785 and 5 May 1794 (Natural History). A further portion was bought by a bookseller, T. King of Oxford Street, and catalogued for sale in 1798.