History of Manchester
According to Oxford University Press, Manchester derived its name from Mamucium, the Roman name for the 1st century-settlement and fort. Mamucium itself is a Latinised form of the Celtic meaning "breast-shaped hill".
Mans (surname)
Until the twentieth century this surname in England was virtually confined to the Welsh Marcher counties and adjacent districts, reflecting the settlement there by King Henry II of his feudal followers who had accompanied him to England from [Le] Mans and other parts of Maine in France in 1154, a number of whom appear in medieval records under the name de Mans or del Mans(French and Latin respectively for 'of Mans' as Le Mans was then known, sometimes with the further description 'Cenomanus' making the city these men came from crystal clear. The name was sometimes spelled by Anglo-Norman clerks Mauns and de Mauns and later also Manns. (Calendar of the Records of the Corporation of Gloucester, Item 96, ca.1200; Fine Roles Henry III, 23 Aug. 1233 [Hereford];'Parishes: Doddenham', A History of the County of Worcester, volume 4 (1924), pp. 260-62.)