The Duchess, the only child of John McNeill, QC, and his wife Amy, née Maynard, was born in Shanghai. Her father was in practice as a barrister in Shanghai and was Crown Advocate of the British Supreme Court for China from 1940 to 1942. On the onset of the Second Sino-Japanese War in 1937, she and her mother were sent to live at the family house in Argyll, although they both returned to Shanghai later. The future duchess attended Abbot's Hill School before starting to model for Norman Hartnell. Her father was appointed acting Crown Advocate in 1939 and to the substantive position in 1940. He was interned by the Japanese at the start of the Pacific War in 1941. He returned to England after an exchange of internees in 1942. After the war he returned to Asia to practice at the bar in Hong Kong. Jane McNeill regularly featured in the society columns of Hong Kong's newspapers.
Marriage
McNeill's marriage to Lord Dalkeith on 10 January 1953 at St. Giles's Cathedral, Edinburgh, attracted media attention, as Dalkeith had earlier been expected to marry Queen Elizabeth II's sister, Princess Margaret. Her wedding was a society event. Herbert Howells's organ piece, Siciliano for a High Ceremony, was written for and first performed on the occasion. Lord Dalkeith, a Conservative Member of Parliament, was thrown off a horse in 1971, and, as a result, remained paralysed from the chest down. He carried on in the House of Commons due to Lady Dalkeith's perseverance, although she herself was a sympathiser of the Scottish National Party. On the death of her father-in-law Walter in 1973, Lady Dalkeith became known as the Duchess of Buccleuch and Queensberry. The new duchess took courses in conservation and got involved in the Dukes of Buccleuch' collection. She served as a director of Buccleuch Estates. In 1979, she produced a recipe book containing McNeill family recipes and those found in Buccleuch cookbooks. The Duchess was widowed in 2007 and died in London in 2011.
Issue
The Duke and Duchess of Buccleuch and Queensberry had four children:
Richard Scott, 10th Duke of Buccleuch, married Lady Elizabeth Kerr, daughter of the Marquees of Lothian, and has issue two sons and two daughters.
Lord John, married Berrin Torolsan, and lives in Istanbul, Turkey.
Lady Charlotte-Anne, married Count Bernard de Castellane in 1991, and has issue two sons and a daughter.
Lord Damian, married Elizabeth Powis, and has issue.