Hamilton, James, 1st Earl of Clanbrassill (1693 -1758)
James Hamilton, of Tollymore in County Down, was the eldest son of James Hamilton, of Tollymore, and Anne, daughter of John Mordaunt, 1st Viscount Mordaunt of Avalon, and the grandson of William Hamilton and Ellinor McGenis, heiress of Tollymore. He succeeded his father in 1700, was elected Member of Parliament for Dundalk in County Down 1715 1719, was raised to the peerage as Baron Claneboye and Viscount Limerick 13 May 1719, and sat in the Parliament of Great Britain as Member for Wendover 1735 1741, for Tavistock 1742 1747, and for Morpeth 1747 1754. He was a member of the Irish Privy Council 14 April 1746, and Governor of County Louth 1756 1758. He was created Earl of Clanbrassil in County Armagh 24 November 1756. He married, 15 October 1728, Henrietta Bentinck, daughter of William 1st Earl of Portland. They had one son, James, who succeeded as 2nd Earl, on whose death in 1798, the Earldom became extinct, and the library passed with the property to Robert Jocelyn 2nd Earl of Roden, whose father had married his sister Anne.