Helen Percy, Duchess of Northumberland

Helen Percy, Duchess of Northumberland, GCVO (13 December 1886 – 13 June 1965) was born as Helen Magdalan Gordon-Lennox, the daughter of the Earl of March and Kinrara (later Duke of Richmond).

She was married on 18 October 1911 to Earl Percy, who succeeded his father as 8th Duke of Northumberland in 1918, whereupon she became known as the Duchess of Northumberland. They had six children:

• Henry George Alan Percy, 9th Duke of Northumberland (15 July 1912 – 21 May 1940)
• Hugh Algernon Percy, 10th Duke of Northumberland (6 April 1914 – 11 October 1988)
• Lady Elizabeth Ivy Percy (25 May 1916 – 16 September 2008) married Douglas Douglas-Hamilton, 14th Duke of Hamilton in 1937
• Lady Diana Evelyn Percy (23 November 1917 – 16 June 1978) married John Egerton, 6th Duke of Sutherland in 1939 in Westminster Abbey
• Lord Richard Charles Percy (11 February 1921–1989)
• Lord Geoffrey William Percy (b. 8 July 1925)

She was Mistress of the Robes to Queen Elizabeth, the Queen Mother from 1937 to 1964 and was appointed a Dame Grand Cross of the Royal Victorian Order in 1938.