Thomas Knox, 1st Earl of Ranfurly

Thomas Knox, 1st Earl of Ranfurly (5 August 1754 – 26 April 1840), styled The Honourable Thomas Knox between 1781 and 1818 and known as The Viscount Northland between 1818 and 1831, was an Irish peer and politician.

Early life Ranfurly was the eldest son of Thomas Knox, 1st Viscount Northland, and the Hon. Anne Vesey, daughter of John Vesey, 1st Baron Knapton. His brothers included bishops William Knox and Edmund Knox, George Knox , and Archdeacon Charles Knox.

His paternal grandparents were Hester ( Echlin) Knox and Thomas Knox, MP for Dungannon who was Deputy-Governor of County Tyrone. He was also a member of the British House of Commons for County Tyrone from 1806 to 1812.

On 18 May 1793 he was commissioned as Lieutenant-Colonel and second-in-command of the newly raised Royal Tyrone Militia. He commanded the regiment on garrison duty for a year, resigning in 1794.

In 1818 he succeeded his father in the viscountcy of Northland, but, as this was an Irish peerage it did not entitle him to a seat in the House of Lords. However, in 1826 he was created Baron Ranfurly, of Ramphorlie in the County of Renfrew, in the Peerage of the United Kingdom, which entitled him and his successors to a seat in the upper chamber of parliament. In 1831 he was further honoured when he was made Earl of Ranfurly in the Peerage of Ireland.

Personal life Lord Ranfurly married his cousin the Hon. Diana Jane Pery, daughter of Edmund Pery, 1st Viscount Pery and Hon. Elizabeth Vesey, in 1785. Together, they were the parents of:

Thomas Knox, 2nd Earl of Ranfurly (1786–1858), who married Mary Juliana Stuart, a daughter of William Stuart, Archbishop of Armagh, and the former Sophia Margaret Penn (the daughter of Thomas Penn, a son of William Penn, founder of Pennsylvania), in 1815. Hon. Edmund Knox (1787–1867), an Admiral in the Royal Navy who married Jane Sophia Hope-Vere, a daughter of William Hope-Vere (a grandson of the 1st Earl of Hopetoun) and sister to James Joseph Hope-Vere, in 1813. Hon. John Henry Knox (1788–1872), who married Lady Mabella Josephine Needham, daughter of Gen. Francis Needham, 1st Earl of Kilmorey, in 1822. Hon. John James Knox (1790–1856), who married Mary Louisa Taylor, a daughter of Edward Taylor, in 1824.

Lady Ranfurly died in November 1839. Lord Ranfurly only survived her by a few months and died in April 1840, aged 85. He was succeeded in his titles by his eldest son, Thomas.