The Right Honourable The Lord Wharncliffe PC
Lord Privy Seal
In office 15 December 1834 – 8 April 1835
Monarch	William IV
Prime Minister	Sir Robert Peel, Bt
Preceded by	The Earl of Mulgrave
Succeeded by	Viscount Dungannon
Lord President of the Council
In office 3 September 1841 – 19 December 1845
Monarch	Victoria
Prime Minister	Sir Robert Peel, Bt
Preceded by	The Marquess of Lansdowne
Succeeded by	The Duke of Buccleuch
Personal details
Born	(1776-10-06)6 October 1776
Died	19 December 1845(1845-12-19) (aged 69)
Nationality	British
Political party	Tory
Spouse	Lady Elizabeth Crichton (1779–1856)
Children	5, including John, Charles, and James
Parent(s)	James Stuart-Wortley-Mackenzie Margaret Cunynghame

Colonel James Archibald Stuart-Wortley-Mackenzie, 1st Baron Wharncliffe, PC (6 October 1776 – 19 December 1845) was a British soldier and politician. A grandson of Prime Minister John Stuart, 3rd Earl of Bute, he held office under Sir Robert Peel as Lord Privy Seal between 1834 and 1835 and as Lord President of the Council between 1841 and 1845.^[1]

Stuart-Wortley was the son of Colonel James Stuart-Wortley-Mackenzie, son of John Stuart, 3rd Earl of Bute, and his wife Mary Wortley-Montagu, Baroness Mountstuart in her own right, daughter of Edward Wortley Montagu and Lady Mary Pierrepont. His father had assumed the additional surname of Wortley as heir to his mother, taking later also that of Mackenzie (which his son in later life discarded) as heir to his great-uncle James Stuart-Mackenzie of Rosehaugh.^[2] Stuart-Wortley's mother was Margaret, daughter of Lieutenant-General Sir David Cunynghame, 3rd Baronet. He was educated at Charterhouse School.^[1]

Stuart-Wortley was commissioned into the 48th Foot in 1790, transferred to the 7th Foot in 1791, and purchased a captaincy in the 72nd Foot in 1793. He was promoted lieutenant-colonel in 1797 and became colonel of the 12th Foot six months later. In 1797 he transferred to the Grenadier Guards, but resigned his commission in 1801.^{[citation needed]}

Stuart-Wortley sat as Tory Member of Parliament for the rotten borough of Bossiney in Cornwall between 1802 and 1818,^[1] when he was returned for Yorkshire.^[1][2][3]

His attitude on various questions became gradually more liberal, and his support of Catholic Emancipation lost him his seat in 1826. He was then raised to the peerage as Baron Wharncliffe, of Wortley in the County of York,^[4] a recognition both of his previous parliamentary activity and of his high position among the country gentlemen.^[2]

In 1831, as political tempers ran high over the issue of Reform, Wharncliffe succeeded in opening channels of communication between the Government and the Opposition. Greville noted in his diary on 19 November 1831 that:

”Wharncliffe has neither wealth, influence, nor superior abilities, nor even popularity with his own party. He is a spirited, sensible, zealous, honorable, consistent country gentleman; their knowledge of his moderation and integrity induced Ministers to commit themselves to him, and he will thus be in all probability enabled to render an essential service to his country…”^[5]

He at first opposed the 1832 Reform Bill but, having come to see the undesirability of a popular conflict, separated himself from the Tories (with a number of colleagues, collectively known as "the Waverers") and took an important part in modifying the attitude of the peers and helping to pass the bill, though his attempts at amendment only resulted in his pleasing neither party. He became Lord Privy Seal in Sir Robert Peel's short 1834 to 1835 ministry, and again joined him in 1841 as Lord President of the Council,^[2] a post he held until 1845.^{[citation needed]}

In 1834, he was sworn of the Privy Council.^[6]

In 1837 Lord Wharncliffe brought out an edition of the writings of his ancestress, Lady Mary Wortley Montagu.^[2]

The 1833 steam locomotive, Lord Wharncliffe, was named after him; it ran on the Dundee and Newtyle Railway, of which he was a director.^[7]

Lord Wharncliffe married Lady Elizabeth Caroline Mary Crichton (1779–1856), daughter of John Crichton, 1st Earl Erne and his second wife Lady Mary Hervey on 30 March 1799. They had five children:^{[citation needed][8]}

• John Stuart-Wortley-Mackenzie, 2nd Baron Wharncliffe (1801–1855)
• Hon. Charles Stuart-Wortley-Mackenzie (1802–1844)
• Hon. Caroline Mary Stuart-Wortley (1803–1806) ^[9]
• Hon. James Archibald Stuart-Wortley (1805–1881), Solicitor-General
• Hon. Caroline Jane Stuart-Wortley-Mackenzie (1809–12 June 1876),^[10] married on 30 August 1830 Hon. John Chetwynd-Talbot (1806–1852)

Lord Wharncliffe died in December 1845, aged 69, and was succeeded in the barony by his eldest son, John, whose son Edward, 3rd Baron was created Earl of Wharncliffe in 1876. Lady Wharncliffe died in April 1856.^{[citation needed]}

• Hansard 1803–2005: contributions in Parliament by Lord Wharncliffe