Balfour was the son of Charles Balfour, and his wife Adelaide (died 1862), daughter and 8th child of the 6th Viscount Barrington.
Lord Strathmore and Kinghorne married the Honourable Charlotte Maria Barrington, daughter of William Barrington, 6th Viscount Barrington, on 30 April 1850.
William Barrington, 6th Viscount Barrington (1793–1867), British MP for Berkshire, chairman of Great Western Railway
William Shakespeare | William Laud | William Blake | William | William III of England | William Morris | William McKinley | William Howard Taft | William Ewart Gladstone | William the Conqueror | William S. Burroughs | William Shatner | William Faulkner | William Randolph Hearst | William Wordsworth | William Tecumseh Sherman | William Hogarth | Prince William, Duke of Cambridge | William Penn | William Jennings Bryan | William Gibson | Horatio Nelson, 1st Viscount Nelson | Viscount | William Wilberforce | William James | William Makepeace Thackeray | Fort William | William Hanna | William Hague | Vickers Viscount |
Wanting to return to active service he eventually secured an audience with the Secretary at War, William Barrington, 2nd Viscount Barrington who refused his resignation to enable him to join the East India Company because the Crown needed officers with experience in the American colonies where trouble was expected over the Townshend Acts and the Stamp Act.
William Barrington, 2nd Viscount Barrington - British politician and eldest son of John Shute Barrington
William, the eldest, became Chancellor of the Exchequer; John was a Major-General in the British Army; Daines was a lawyer, antiquarian and naturalist; Samuel was a Rear-Admiral in the Royal Navy; and Shute became Bishop of Salisbury and Bishop of Durham.
René Köhler was a non-existent conductor invented by William Barrington-Coupe as part of a fraud in which he passed off numerous plagiarised recordings of classical pianists as the work of his wife, Joyce Hatto.
During the time of the French and Indian War, Hodgson served as the correspondent of William Wildman Barrington, who was the Secretary at War starting in 1755.
William Barrington, 2nd Viscount Barrington (1717–1793), British MP for Berwick and for Plymouth, Secretary at War and Chancellor of the Exchequer