Clan Auchinleck are a Scottish kin group who do not have a recognised chief and are therefore considered an armigerous clan.
Nisbet states that the chiefs of this surname had lands in the county of Angus and took their name from those lands. <ref>George Way of Plean and Romilly Squire, Scottish Clan and Family Encyclopedia, 354</ref> The origin of the name may be purely descriptive of the topography of the land it describes: 'auchen' seems to be applied to raised or higher land separating areas of water, while'lech' may indicate dead, in the sense of barren or sterile. <ref>Plean, Squire, Encyclopedia, 354</ref>
Another version of this name is Affleck. <ref>David Dorward, Dictionary of Scottish Surnames, 2</ref> There was a Patrick de Achenlak in Lanark in 1296. <ref>Dorward, Surnames, 2</ref> There is also a barony of Auchinleck in Ayrshire, and in 1300 the Laird of Auchinleck is reputed to have followed Sir William Wallace to Glasgow where he fought and slew the Northumbrian Earl Percy.
Black states that John of Aghelek, otherwise Achinfleck, is the first recorded of the Angus family of the name and did homage in 1306.<ref>Plean, Squire, Encyclopedia, 354</ref> The Angus Auchinlecks held the office of hereditary armour bearers to the Earls of Crawford and lived in the substantial tower known as Affleck near the village of Monikie.<ref>Plean, Squire, Encyclopedia, 354</ref>
The tower passed out of the hands of the family but still stands to this day.<ref>Plean, Squire, Encyclopedia, 354</ref>
Affleck Tower or Castle, Angus
The family married into the distinguished family of Boswell, through one of the daughters of Sir John Auchinleck of that Ilk, and adopted the style 'of Auchinleck'. James Boswell, the famous biographer of Samuel Johnson, was a member of this family. <ref>Plean, Squire, Encyclopedia, 354</ref>
General Sir Claude Auchinleck was commander-in-chief in India in 1941 when Winston Churchill, the British Prime Minister, assigned him to lead the Allied offensive in the western desert of Egypt and India. He led the British Eighth Army at the first battle of El Alamein in July 1942. <ref>Plean, Squire, Encyclopedia, 354</ref>The battle was indecisive, and Auchinleck was replaced by Bernard, later Field Marshal, Montgomery, who went on to lead the Eighth Army in a second attack on El Alamein in October, breaking Rommel's Afrika Korps and securing an important victory for the Allies at a crucial time in the war. <ref>Plean, Squire, Encyclopedia, 354</ref>
General Sir Claude Auchinleck
According to Dorward, Auchinleck has barely survived as a surname in Scotland and Sir Claude was one of the few bearers of it in modern times. <ref>Dorward, Surnames, 2 </ref> Affleck, however, is a familiar if not numerous name in the Borders and Aberdeenshire. <ref>Dorward, Surnames, 2 </ref>