On 28 May 1763, Grey married Lady Henrietta, second daughter of
William Bentinck, 2nd Duke of Portland and the art collector
Margaret Bentinck, Duchess of Portland, only daughter and heiress of
Edward Harley, 2nd Earl of Oxford and Earl Mortimer at Stamford House, Whitehall, and registry office, Westminster, having nine children including: • Lady Henrietta Grey (1764–1826), married
John Chetwode •
George Grey, 6th Earl of Stamford (1765–1845), his successor in the
family titles; married Lady Henrietta Charteris, daughter of
Francis, Lord Elcho • Hon. Marie Booth Grey (2 November 1767 – 21 November 1767), died in infancy • Lady Maria Grey (1769–1838), married
John Cotes MP • Lady Louisa Booth Grey (1771–1830), died unmarried • Hon. William Booth Grey (1773–1852), married first Frances Anne Pryce, heiress of
Duffryn; married second Hon. Frances Somerville, sister of 16th
Lord Somerville • Hon. Rev. Anchitel Grey (1774–1833), a
prebendary of Durham, died unmarried • Capt. Hon. Henry Grey
RN (1776–1799), died after being shipwrecked on board in
Barnstaple Bay • Lady Sophia Grey (1777–1849), married her cousin,
Booth Grey MP, of
Ashton Hayes • Lady Amelia Grey (1779–1849), married
John Lister Kaye On his death in 1819 at Enville Hall, he was succeeded by his eldest son. ==See also==