Elizabeth Douglas-Hamilton, Duchess of Hamilton
Elizabeth Ivy Douglas-Hamilton, Duchess of Hamilton, OBE, DL (25 May 1916 – 16 September 2008), was the daughter of Alan Percy, 8th Duke of Northumberland (1880–1930) and his wife, Helen.
She was born as Lady Elizabeth Ivy Percy at Alnwick Castle in Northumberland and spent her youth between there, Albury House in Surrey and Syon House in Middlesex.
She was married in 1937 to Douglas Douglas-Hamilton (the then Marquess of Douglas and Clydesdale), who subsequently became the 14th Duke of Hamilton and 11th Duke of Brandon.
Nina Douglas-Hamilton, Duchess of Hamilton
Nina Mary Benita Douglas-Hamilton, Duchess of Hamilton (née Nina Mary Benita Poore; 13 May 1878 – 12 January 1951), was a British peeress and animal activist.
Lord David Douglas-Hamilton
Squadron Leader Lord David Douglas- Hamilton
( 8 November 1912 – 2 August 1944) was a Scottish nobleman, pilot, and boxer.
He was the youngest son of Lt. Alfred Douglas- Hamilton, 13th Duke of Hamilton RN and his wife Nina, née Poore.
Douglas- Hamilton was one of four brothers who made history by simultaneously being at the rank of squadron leader or above at the outset of World War II, he himself commanding No. 603 Squadron RAF from 18 December 1941 till 20 July 1942.
Educated at Harrow, and Balliol College, Oxford.
Douglas- Hamilton saw active service between 1939 and 1944, flying Spitfires in Operation Torch over Malta.
On return to Britain, he was killed whilst carrying out reconnaissance over the French coast, and crashed in southern England.
At the 1934 Empire Games he won the bronze medal in the heavyweight class of the boxing tournament.
Douglas Douglas-Hamilton, 14th Duke of Hamilton
Air Commodore Douglas Douglas- Hamilton, 14th Duke of Hamilton and 11th Duke of Brandon,( 3 February 1903 – 30 March 1973) was a Scottish nobleman and aviator who, together with D.F. McIntyre, was one of the first men to fly over Mount Everest.
James Douglas-Hamilton, Baron Selkirk of Douglas
James Alexander Douglas-Hamilton, Baron Selkirk of Douglas, (born 31 July 1942), briefly The 11th Earl of Selkirk (a title he disclaimed) and previously styled Lord James Douglas-Hamilton as a younger son of the 14th Duke of Hamilton and Brandon, is a Scottish Conservative politician who served as Member of Parliament for Edinburgh West and then as Member of the Scottish Parliament for the Lothians.
Since 1997 he has been a member of the House of Lords as a life peer.
Alexander Douglas-Hamilton, 16th Duke of Hamilton
Alexander Douglas Douglas- Hamilton, 16th Duke of Hamilton( born 31 March 1978) is a Scottish nobleman and the Premier Peer of Scotland.
He is the son of Angus Douglas- Hamilton, 15th Duke of Hamilton, and his first wife, Sarah Scott.
He was educated at Keil School, Dumbarton, and Gordonstoun in Scotland.
Upon the death of his father on 5 June 2010, he became the 16th Duke of Hamilton and 13th Duke of Brandon.
He is the Hereditary Keeper of the Palace of Holyroodhouse.
The seat of the Dukes of Hamilton is Lennoxlove House, replacing the now- demolished Hamilton Palace.
Rosalind Hamilton, Duchess of Abercorn
Rosalind Cecilia Caroline Hamilton, Duchess of Abercorn,( 26 February 1869 – 18 January 1958;" née" Lady Rosalind Bingham) was a British aristocrat and the Duchess of Abercorn by marriage.
She was a great- grandmother of Diana, Princess of Wales.
Alfred Douglas-Hamilton, 13th Duke of Hamilton
Lieutenant Alfred Douglas Douglas- Hamilton, 13th Duke of Hamilton and 10th Duke of Brandon TD, DL( 6 March 1862 – 16 March 1940) was a Scottish nobleman and sailor.
Alan Percy, 8th Duke of Northumberland
Alan Ian Percy, 8th Duke of Northumberland, (17 April 1880 – 23 August 1930) was a British army officer.
Sophie Douglas-Hamilton, Duchess of Hamilton
Sophie Ann Douglas- Hamilton, Duchess of Hamilton( née Rutherford; 8 December 1976) is a Scottish noblewoman and interior designer.
She is the wife of Alexander Douglas- Hamilton, 16th Duke of Hamilton, Scotland's Premier Peer.

Question: When was Elizabeth Douglas-Hamilton, Duchess Of Hamilton's father born?
Answer: 17 April 1880