Aitchison
Aitchison is a Scottish surname of Scots origin. It derives from the pet name Atkin, which is a diminutive of Adam.
Another variant of the name is Acheson. It corresponds to the English name Atkinson, which is particularly common in Northern England. At the time of the British Census of 1881, the relative frequency of the name Aitcheson was highest in Berwickshire (174.6 times the British average), followed by Haddingtonshire, Roxburghshire, Selkirkshire, Peeblesshire, Dumfriesshire, Edinburghshire, Linlithgowshire, Northumberland and Lanarkshire. The Aitchisons are traditionally a mainly Borders and Lowlands family. They are considered to be a sept of Clan Gordon