The Right Honourable The Lord Elphinstone KT, FRSE, FRSGS
Elphinstone as caricatured in Vanity Fair in May 1911.
Born	Sidney Herbert Elphinstone (1869-07-27)27 July 1869 Carberry Tower, East Lothian, Scotland
Died	28 November 1955(1955-11-28) (aged 86)
Alma mater	Marlborough College
Title	16th Lord Elphinstone
Spouse	Lady Mary Bowes-Lyon ​ ​ (m. 1910)​
Children	Hon. Mary Elphinstone John Elphinstone, 17th Lord Elphinstone Hon. Jean Wills Hon. Andrew Elphinstone Hon. Margaret Rhodes
Parents	William, Lord Elphinstone (father) Lady Constance Murray (mother)

Sidney Herbert Elphinstone, 16th Lord Elphinstone and 2nd Baron Elphinstone, KT, FRSE, FRSGS (27 July 1869 – 28 November 1955) was a British nobleman.

Sidney Herbert Elphinstone was born at Carberry Tower south-east of Edinburgh on 27 July 1869. He was the son of William, 15th Lord Elphinstone and Lady Constance Murray (28 Dec 1838 – 16 Mar 1922).^[1]

His maternal grandparents were Alexander Murray, 6th Earl of Dunmore and Lady Catherine Herbert, daughter of the 11th Earl of Pembroke. His paternal grandparents were Lieutenant-Colonel James Drummond Fullerton Elphinstone and his second wife, Anna Maria (née Buller) Elphinstone, the daughter of Sir Edward Buller, 1st Baronet.

He was educated at Marlborough College and succeeded his father in 1893.^{[citation needed]}

Lord Elphinstone was Lord High Commissioner to the General Assembly of the Church of Scotland in 1923 and 1924, Lord Clerk Register of Scotland and Keeper of the Signet from 1944 until his death. From 1924 to 1930 he served as president of the influential conservationist group the Cockburn Association.^[2] He was invested as a Knight of the Thistle in 1927^[3] and was Chancellor of the Order from 1949. He was Captain General of the Royal Company of Archers from 1935 until 1953 and was Governor of the Bank of Scotland from 1924 to 1955.^[4]

In 1938, he was elected a Fellow of the Royal Society of Edinburgh (FRSE). His proposers were Hugh Macmillan, Baron Macmillan, Sir Thomas Henry Holland, James Pickering Kendall and James Watt.^[5]

Lord Elphinstone's Scrap book, which is held in the Mary Ann Beinecke Decorative Art Collection at the Sterling and Francine Clark Art Institute Library, provides a list of the clans of Scotland with the badges of distinction used by them. This rare book includes textile samples of clan tartans along with watercolour illustrations of clan flowers. Elphinstone was at one time a Trustee and Commissioner of Manufacturers in Scotland. The Scrap book can be viewed in the Digital Collections of the Clark Library.

Lord Elphinstone married Lady Mary Bowes-Lyon on 24 July 1910 in Westminster. She was the daughter of Claude Bowes-Lyon, 14th Earl of Strathmore and Kinghorne and Cecilia Cavendish-Bentinck. She was also a sister of Queen Elizabeth The Queen Mother. The couple had five children:^[6]

• The Hon. Mary Elizabeth Elphinstone (1911–1980). She was a bridesmaid at the wedding of Prince Albert, Duke of York, and Lady Elizabeth Bowes-Lyon on 26 April 1923.^[7]
• John Elphinstone, 17th Lord Elphinstone (1914–1975). He died unmarried and had no issue.
• The Hon. Jean Constance Elphinstone (1915–1999), married Captain John Wills. Their daughter Marilyn was a goddaughter of Princess Margaret and a bridesmaid at her 1960 wedding.^[8]
• The Hon. and Rev. Andrew Charles Victor Elphinstone (1918–1975), married Jean Hambro and had issue. His wife was a Lady-in-Waiting to Queen Elizabeth II. Their son James became the 18th Lord Elphinstone.^[9]
• The Hon. Margaret Elphinstone (1925–2016), married Denys Rhodes and had issue. She was a bridesmaid at the 1947 wedding of the then-Princess Elizabeth and the Duke of Edinburgh.

The Lord Elphinstone died on 28 November 1955, aged 86.^[6]

• Lord Elphinstone's Scrap Book Mary Ann Beinecke Decorative Art Collection