Henry Pelham Alexander Pelham-Clinton, 6th Duke of Newcastle-under-Lyne (25 January 1834 – 22 February 1879) was an English nobleman, styled Lord Clinton until 1851 and Earl of Lincoln until he inherited the dukedom in 1864.
Pelham-Clinton was educated at Eton College and then Oxford University.
His political career was limited to sitting as Member of Parliament for Newark between 1857 and 1859. He did not hold any significant political offices in Nottinghamshire, although he was Provincial Grand Master of the Nottinghamshire Freemasons from 1865 to 1877.
Lincoln's taste for gambling resulted in his fleeing the country in 1860 to escape his debts, which had then reached £230,000. In 1861, he married Henrietta Hope, heiress of the wealthy Henry Thomas Hope, in Paris. As part of the marriage settlement, his debts were paid and an income of £50,000 a year settled on the couple. Extensive lands in England and Ireland were also added to his family's holdings by inheritance from his father-in-law, although Pelham-Clinton himself never controlled them due to the terms of that testament.
He succeeded his father as Duke of Newcastle in 1864 and had five children with Henrietta:
| Parliament of the United Kingdom | ||
|---|---|---|
| Preceded by John Manners-Sutton Granville Edward Harcourt-Vernon |
Member of Parliament for Newark 1857 – 1859 With: John Handley |
Succeeded by John Handley Grosvenor Hodgkinson |
| Peerage of Great Britain | ||
| Preceded by Henry Pelham-Clinton |
Duke of Newcastle-under-Lyne 1864–1879 |
Succeeded by Henry Pelham-Clinton |