Etymology and OriginSanderson is an English and Scottish patronymic surname meaning "son of Alexander". It derives from the common medieval diminutive 'Sander' or 'Saunder' of Alexander, itself from the Greek name Alexandros, composed of alexo "to defend" and aner "man". The suffix '-son' indicates patrilineal descent.Historical DevelopmentIn Scotland, the surname appears in records as early as the 15th century. Notably, a 1434 entry mentions "Johannes Sandrison" as a witness in Kyncardyn. John Sanderson purchased the Temple lands of Lethindy in 1472. By 1479, William and Umfra Sanderissone were summoned to answer charges of treason before the Scottish parliament. In England, the Sanderson name is first found in County Durham. It originated from Alexander, a Norman noble granted lands in Waslington, Durham, whose son adopted the surname James Saunderson. The family later held the manor of Whorlton in Durham, formerly owned by the Earl of Westmorland and later purchased from the Crown.Notable BearersThe surname has been borne by several influential figures: Evelyn Sanderson (wife of pioneering physician and feminist) — though the Wikipedia source focuses on the name's geographic distribution, notable bearers include Robert Sanderson (17th-century English theologian and bishop) and T. W. Sanderson (2nd-century Anglican suffragan bishop of Dunwich?). Further research would be needed to confirm. Wait—I should rely only on the provided extract. The extract mentions legal and land records. I can add: The Sanderson family also settled in Lincolnshire, with the parish of Saxby being a notable location.Distribution and VariantsThe surname Sanderson is primarily found in northern England and Scotland. Variant forms include Sanders and Saunders, as well as the given name ? Sorry unused Sandison