Henrietta married the future duke in London on 4 August 1795, when he was styled Marquess of Titchfield.[4] The marquess obtained Royal Licence to take the name and arms of Scott in addition to that of Cavendish-Bentinck. They had nine children:[5]
Lady Mary Cavendish-Scott-Bentinck (1809-1874), who married Lt.-Col. Sir William Topham[6]
The marquess inherited his father's dukedom in 1809, and Henrietta became Duchess of Portland. Their family home was Welbeck Abbey, Nottinghamshire, where the duke kept racehorses and carried out extensive irrigation works.[3]
Two of the couple's sons predeceased their parents: the Marquess of Titchfield died of a brain lesion, aged 27, and Lord George Bentinck of a heart attack. The duchess predeceased her husband, who died at Welbeck Abbey in March 1854, aged 85.
^"Death of the Duke of Portland". The Times. 29 March 1854. p. 11.
^G.E. Cokayne; with Vicary Gibbs, H.A. Doubleday, Geoffrey H. White, Duncan Warrand and Lord Howard de Walden, editors, The Complete Peerage of England, Scotland, Ireland, Great Britain and the United Kingdom, Extant, Extinct or Dormant, new ed., 13 volumes in 14 (1910-1959; reprint in 6 volumes, Gloucester, U.K.: Alan Sutton Publishing, 2000), volume II, page 519.