Thomas Orde-Powlett, 1st Baron Bolton PC (30 August 1746 – 30 July 1807) was an English politician. He was also an amateur etcher, and a cartoonist. 
Born Thomas Orde, he was son of John Orde of Morpeth, Northumberland. He was educated at Eton and at King's College, Cambridge, graduating Master of Arts in 1773. 
Orde entered politics as Tory Member of Parliament for Aylesbury (1780–1784) and later for Harwich (1784–1796). He served as Secretary to the Treasury (1782–1783) and as Chief Secretary for Ireland (1784–1787). Around 1782, he was appointed to the Privy Council of Ireland, and in 1785, to HM Privy Council. He was Governor of the Isle of Wight (1791–1807) and Lord Lieutenant of Hampshire (1800–1807).
On 7 January 1795, by Royal Licence, he assumed the additional surname of Powlett, and on 20 October 1797 he was created Baron Bolton. His younger brother John Orde was an Admiral in the Navy, and was created a Baronet, of Morpeth in the County of Northumberland, in 1790.
He died in 1807 and was succeeded by his eldest son William, the second Baron, who was MP for Yarmouth (IoW) for a short while.
On 7 April 1778 Orde married Jean Mary Browne-Powlett, the illegitimate daughter of Charles Powlett, 5th Duke of Bolton, who had entailed most of his extensive estates to her in default of male issue of his younger brother Harry Powlett, 6th Duke of Bolton. The latter died without male heirs in 1794, the Dukedom became extinct, and the said inheritance passed to Thomas Orde in right of his wife. The properties with attached farms included Bolton Hall and Bolton Castle in North Yorkshire and Hackwood Park, Old Basing, Hampshire.
George Nugent-Temple-Grenville, 1st Marquess of Buckingham, was a British statesman.
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Baron Bolton, of Bolton Castle in the County of York, is a title in the Peerage of Great Britain. It was created in 1797 for the Tory politician Thomas Orde-Powlett, who had previously served as Chief Secretary for Ireland. Born Thomas Orde, he was the husband of Jean Mary Browne-Powlett, illegitimate daughter of Charles Powlett, 5th Duke of Bolton, who had entailed the greater part of his extensive estates to her in default of male issue of his younger brother Harry Powlett, 6th Duke of Bolton.
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The Orde, later Campbell-Orde Baronetcy, of Morpeth in the County of Northumberland, is a title in the Baronetage of Great Britain. It was created on 9 August 1790 for the naval commander John Orde. He was the younger brother of Thomas Orde-Powlett, 1st Baron Bolton. The third Baronet assumed in 1880 by Royal licence the additional surname of Campbell, which was that of his maternal grandfather Peter Campbell, of Kilmory.
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Bolton Hall is a country house near Preston-under-Scar, Richmondshire, North Yorkshire, England, in Wensleydale, some 3 miles (5 km) west of Leyburn. It was built in the late 17th century and rebuilt after a fire in 1902. It is a grade II listed building, as is an 18th-century folly tower in the grounds.