text: Family On 28 November 1899, Lord Londonderry married the Hon. Edith Helen Chaplin, eldest daughter of Henry Chaplin, 1st Viscount Chaplin, and Lady Florence Sutherland-Leveson-Gower (herself a daughter of the 3rd Duke of Sutherland) at St Peter's Church, Eaton Square and had issue:
  Lady Maureen Helen Vane-Tempest-Stewart (1900–1942), who married in 1920 the Hon. Oliver Stanley and had issue: (i) Michael Charles Stanley (1921–1990), who married (Aileen) Fortune Constance Hugh Smith and had two sons; and (ii) Kathryn Edith Helen Stanley DCVO (1923–2004), Lady-in-Waiting to Queen Elizabeth II from 1955 to 2002 and who married Sir John Dugdale KCVO (1923–1994) and had two daughters and two sons.
  Edward Charles Stewart Robert Vane-Tempest-Stewart, 8th Marquess of Londonderry (1902–1955)
  Lady Margaret Frances Anne Vane-Tempest-Stewart (1910–1966), who married in 1934 (div. 1939) Frederick Alan Irving Muntz and in 1952 (div.1958) as his 3rd wife, Hugh Falkus (1917–1996).
  Lady Helen Maglona Vane-Tempest-Stewart (1911–1986), who married, firstly (of three marriages), in 1935 Edward Jessel, 2nd Baron Jessel, and had issue: (i) Hon. Timothy Edward Jessel (1935–1969) who married twice and had issue; (ii) Hon. Camilla Edith Mairi Elizabeth Jessel (b. 1940) who was married and has issue; and (iii) Hon. Joanna Margaret Jessel (1945-1980) who was married and had issue.