Basil Hamilton-Temple-Blackwood, 4th Marquess of Dufferin and Ava

British politician

Basil Sheridan Hamilton Temple Blackwood, 4th Marquess of Dufferin and Ava (born Basil Sheridan Hamilton Temple Blackwood; 6 April 1909 – 25 March 1945), styled Earl of Ava from 1918 until 1930, was a Conservative politician and soldier of the United Kingdom.

Dufferin was the eldest child, and only son, of the 3rd Marquess of Dufferin and Ava and the former Brenda Woodhouse. Following his father's succession to the marquessate in 1918, he was known as the Earl of Ava. His grandfather, a descendant of the 18th century playwright Richard Brinsley Sheridan, "was the cultured and worldly 1st Marquess of Dufferin and Ava", who served as the Viceroy and Governor General of India. and Eton College, and then at Balliol College, Oxford. After his return from India he was appointed Parliamentary Private Secretary to the 11th Marquess of Lothian, who was Under Secretary of State for India, and then to the 3rd Viscount Halifax (later 1st Earl of Halifax) who was successively President of the Board of Education from 1932 to 1935, Secretary of State for War in 1935, and Lord Privy Seal from 1935 to 1937. Lord Dufferin was chairman of the Primrose League from 1932 to 1934, a Lord in waiting to King George VI from 1936 to 1937 and was himself appointed Under Secretary of State for the Colonies in 1937, serving until his resignation in 1940.

In 1940, he resigned from the government to join the British Army, refusing a post in the World War II coalition government of Winston Churchill. He received a commission as a captain in the Royal Horse Guards in July 1940 but was released from the Army in 1941 to become Director of the Empire Division of the Ministry of Information. The following year he undertook a special mission abroad for the ministry, and rejoined the Army in 1944. Lord Dufferin was serving with the Indian Field Broadcasting Unit on 25 March 1945 when he was filmed demanding the surrender of Japanese troops who were sheltered in a tunnel; the film then captured Lord Dufferin's death when a Japanese mortar shell landed on the unit, just a few weeks short of his 36th birthday.

On 3 July 1930, Lord Dufferin and Ava was married to brewery heiress Maureen Constance Guinness, the second daughter of Hon. Arthur Ernest Guinness, himself the second son of Edward Guinness, 1st Earl of Iveagh, at St. Margaret's, Westminster. They had three children:

Lady Caroline Maureen Hamilton Temple Blackwood (1931–1996), who married three times; first to Lucian Freud (son of architect Ernst L. Freud and grandson of Sigmund Freud), secondly to Israel Citkowitz, and lastly to American poet Robert Lowell. Lady Perdita Maureen Hamilton Temple Blackwood (b. 1934)
Sheridan Frederick Terence Hamilton Temple Blackwood, 5th and last Marquess of Dufferin and Ava (1938–1988), who married his fourth cousin Serena Belinda "Lindy" Rosemary Guinness in 1964. Because he has no known grave in Burma, Lord Dufferin is commemorated by the Commonwealth War Graves Commission, his name listed on Face 1 of the Rangoon Memorial in Taukkyan War Cemetery. In the family burial ground of Campo Santo at Clandeboye, County Down a Celtic cross stands to mark his loss and the earlier losses of the Dufferin family to war. His friend John Betjeman wrote the poem In Memory of Basil, Marquess of Dufferin and Ava in his memory.