They had two children. Their son, Henry Cavendish Harley, Lord Harley, lived only four days.[3] Their only child to attain maturity was Margaret (1715–1785), and so whilst Margaret inherited most of the combined Holles-Harley fortunes on her parents' deaths, the title of Earl of Oxford and Earl Mortimer passed to Edward's cousin (also Edward).
She was buried 26 December 1755 in the Duke of Newcastle's vault in Westminster Abbey.[6]
References
^She was only known as Countess of Oxford after her husband's succession to his earldom - she was previously known as Lady Henrietta Cavendish Holles, 1694-1713, and as Lady Henrietta Cavendish Harley, 1713-1724
^Cokayne, George Edward, The Complete Peerage of England, Scotland, Ireland, Great Britain and the United Kingdom, Extant, Extinct or Dormant, A. Sutton, Gloucester, 1982, vol. X, p. 267.
^Bebbington, Gillian. (1972) London Street Names. London: B.T. Batsford. pp. 164–5 & 171. ISBN0713401400
^Chester, Joseph (1876). The Marriage, Baptismal, and Burial Registers of the Collegiate Church or Abbey of St. Peter, Westminister. London. p. 389.{{cite book}}: CS1 maint: location missing publisher (link)