Personal life
On 9 February 1940, Lord Harlech married Sylvia Lloyd Thomas (1920–1967) daughter of Hugh Lloyd Thomas, Envoy Extraordinary and Minister Plenipotentiary to France between 1935 and 1938, and Guendaline Ada Bellew. Before Lady Harlech's death in an automobile accident on 30 May 1967, they had five children:
Julian Hugh Ormsby-Gore (1940–1974), who died of gunshot wounds, an apparent suicide.
Jane Teresa Denyse Ormsby-Gore (b. 1942), who was said to have had an affair with Mick Jagger during the 1960s; some consider the Rolling Stones song "Lady Jane" to be about her. She married Michael Rainey in 1966 (div. 1984) and lived at Brogyntyn Home Farm, Oswestry.
Victoria Mary Ormsby-Gore (1946–1995)
Alice Magdalen Sarah Ormsby-Gore (1952–1995), who was the girlfriend of Eric Clapton from 1969 to 1974. She died of a heroin overdose in 1995.
Francis David Ormsby-Gore, 6th Baron Harlech (1954–2016), who married Amanda Jane Grieve (b. 1959), daughter of Alan Grieve.
In 1968, Lord Harlech proposed to the widowed Jacqueline Kennedy, whom he had been friends with since before her husband's assassination. Jacqueline Kennedy declined his offer of marriage in a letter, writing: "If ever I can find some healing and some comfort — it has to be with somebody who is not part of all my world of past and pain ... I can find that now if the world will let us." She later married Aristotle Onassis.
On 11 December 1969, Lord Harlech married American socialite Pamela Colin, daughter of a Manhattan top corporate lawyer, herself a London resident editor of Vogue and then food editor of the British Vogue. The wedding was attended by Princess Margaret, the Duke and Duchess of Devonshire, the Earl and Countess of Drogheda, the Earl and Countess of Airlie, The Countess Gowrie, Lord and Lady David Cecil, Sir Fitzroy Maclean, J. J. Astor and Michael Astor. They had one daughter:
Pandora Beatrice Ormsby-Gore (b. April 1972), who is the partner of actor Rory Kinnear, with whom she has two children.