Archibald Sinclair, 1st Viscount Thurso

Sinclair was born in 1890 in Caithness, Scotland. Sinclair was the son Clarence Granville Sinclair, and his American wife Mabel Sands, daughter of Mahlon Day Sands, and half-sister of Ethel Sands. His mother died shortly after his birth, and his father in 1895. He was brought up in families including those of his paternal grandfather Sir Tollemache Sinclair, 3rd Baronet, his uncle William Macdonald Sinclair, and Owen Williams, married to his aunt Nina. Educated at Eton College and the Royal Military College, Sandhurst, Sinclair was commissioned into the Life Guards in 1910. In 1912, he succeeded his grandfather as the fourth Baronet of Ulbster. He became one of the largest landowners in the United Kingdom, owning an estate of about in Caithness. Colin Coote in his memoirs wrote of Sinclair's "irresistible charm, allied to the face and figure of an Adonis". The handsome Sinclair was at this period thought of as a possible husband for Nellie Hozier, younger sister of Clementine Churchill. ==Military career==

officers in 1916 Sinclair served on the Western Front during World War I, in 1915 as aide de camp to J. E. B. Seely who commanded the Canadian Cavalry Brigade. He rose to the rank of Major in the Guards Machine Gun Regiment. They were stationed in the Ploegsteert Wood sector of the Western Front. ==Working with Churchill==

From 1919 to 1921 Sinclair served as Personal Military Secretary to Churchill, when he returned to the Cabinet as Secretary of State for War, and then accompanied him to the Colonial Office as Private Secretary. It was Sinclair who introduced the prominent British agent Sidney Reilly to Nikolai Alekseyev, intelligence chief of the White Russian leader Alexander Guchkov. ==Political career 1922–1939==

In 1922, Sinclair entered the House of Commons as a Liberal Member of Parliament (MP) for Caithness and Sutherland, supporting David Lloyd George and defeating the incumbent Liberal supporter of H. H. Asquith. He rose through the Liberal ranks as the party shrank in Parliament, becoming Chief Whip by 1930. In July 1931, a meeting took place at Sinclair's house, where Oswald Mosley and Harold Nicolson met Churchill, Lloyd George and Brendan Bracken, to discuss a political alliance. About a month later, the Liberal Party joined the National Government of Ramsay MacDonald, with Sinclair appointed Secretary of State for Scotland. He was sworn of the Privy Council at the same time. In 1932, he, together with other Liberal ministers led by Herbert Samuel, resigned from the government in protest at the Ottawa Conference introducing Imperial Preference. Sinclair consistently opposed the continental dictatorships and kept the National Liberals at arms length. He supported the League of Nations and collective security. He backed, as did Attlee, Churchill's book Arms and the Covenant. Public opinion at this point of the later 1930s by no means agreed, and John Alfred Spender attacked Sinclair in The Times on foreign policy, claiming that he, like the League of Nations Union, wished for war with the Axis powers. At the time of the Munich Crisis in September 1938, Sinclair was one of the anti-appeasement group who gathered around Churchill, with Leo Amery, Robert Boothby, Robert Cecil, Harold Macmillan and Harold Nicolson. During parliamentary debate over the Munich Agreement he attacked Prime Minister Neville Chamberlain for "wilting" to Nazi Germany and tossing "justice and respect for treaties... to the winds." On a personal level, Violet Bonham Carter was a frequent guest of the Sinclairs at Dalnawillan Lodge in the Flow Country, as were Harcourt Johnstone and Lady Gwendoline Churchill, wife of Jack Churchill and Winston's sister-in-law. Bonham Carter was a Liberal activist, close follower of Churchill, anti-appeaser and League of Nations Union member. ==Second World War==

When Churchill formed an all-party coalition government in 1940, Sinclair entered the cabinet as Secretary of State for Air. During the May 1940 British war cabinet crisis after the fall of France he sided with Churchill against Lord Halifax's plan to seek a negotiated settlement with Nazi Germany mediated by Fascist Italy. Sinclair's first task was to work with the Royal Air Force in planning the Battle of Britain. Towards the end of the war, he found himself at odds with Churchill, arguing against Bomber Harris' strategy for the Bombing of Dresden and other German cities. He was not a strong political personality: Max Hastings reports that he was often regarded as the "Head of School's fag" to Churchill, and as the political mouthpiece rather than the master of Air Chief Marshals Portal and Harris. However, in 1942 he did convince Churchill and his cabinet not to carry out reprisals on German villages for war atrocities such as the Lidice massacre. Sinclair remained a minister until May 1945, when the coalition ended. In the 1945 general election, he lost his seat. His margin of defeat was narrow: he came in third place, with the victor Eric Gandar Dower having 61 votes more. in the World War II period ==Last years==

At the 1950 general election, Sinclair again stood for his old seat, coming second. In 1952, the year of his first stroke, he accepted elevation to the House of Lords as Viscount Thurso of Ulbster in the County of Caithness. A more serious stroke in 1959 left him largely bedridden and in a state of precarious health, until he died at his home in Twickenham in 1970. ==Family==

In 1918 Sinclair married Marigold Forbes (1897–1975), daughter of Lieutenant-Colonel James Stewart Forbes and Lady Angela Forbes. They had four children: • Catherine (1919–2007), married 1957 Kazimierz Zielenkiewicz. • Elizabeth (1921–1994), married in 1942 Archibald Michael Lyle, son of Sir Archibald Lyle, 2nd Baronet, and was mother of Veronica Linklater. • Robin (1922–1995), married 1952 Margaret Beaumont Robertson, and was father of John Sinclair, 3rd Viscount Thurso • Angus John (1925–2003), married firstly in 1955 Pamela Karen Bower, daughter of Dallas Bower (dissolved 1967), secondly in 1968 Judith Anne Percy (dissolved 1992), thirdly in 1992 Kate Fry. ==Legacy==

The Southern Railway named a Battle of Britain Class Light Pacific steam locomotive "Sir Archibald Sinclair". The ceremonial naming of the locomotive was performed by Sir Archibald himself at Waterloo station on 24 February 1948. The locomotive is preserved on the Bluebell Railway. ==References==