Dorothy Evelyn Augusta Wood, Countess of Halifax (née Onslow; 7 February 1885 – 2 February 1976), styled as the Lady Irwin from 1925 until 1934, was a British aristocrat, courtier, and Vicereine of India. Born at Richmond Terrace, Whitehall, London, she was the daughter of William Onslow, 4th Earl of Onslow, Governor-General of New Zealand, and Hon. Florence Gardner, the daughter of Alan Gardner, 3rd Baron Gardner.[1][2] Her brother, Richard William Alan Onslow, was a prominent politician and succeeded to the Earldom of Onslow.[3][4]
She was the wife of Viceroy and Governor-General Edward Frederick Lindley Wood, 1st Earl of Halifax. They had five children. She held the office of Lady of the Bedchamber to Queen Elizabeth The Queen Mother.[2][5]
Having succeeded the Countess of Reading in 1926 (and Viscountess Goschen in 1929), she was succeeded, as Viceregal-Consort of India, by The Countess of Willingdon in 1931.