Henry Pelham Alexander Pelham-Clinton, 6th Duke of Newcastle-under-Lyne was an English nobleman, styled Lord Clinton until 1851 and Earl of Lincoln until he inherited the dukedom in 1864..
A gambler with a fondness for high living, in 1860 he was forced to leave the country for failing to repay his gambling debts, which by that stage amounted to some £230,000. His fortunes were significantly improved as a result of his marriage on 11 February 1861 to the wealthy heiress, Henrietta Adela Hope, daughter of Henry Thomas Hope of Deepdene in Surrey. Lincoln's financial difficulties meant the marriage had to take place in Paris, but the outcome of the union was that his debts were paid and an income of £50,000 per annum was settled on the couple.