Manchester
The name Manchester originates from the Latin name "Mamucium" or its variant "Mancunium" and the citizens are still referred to as Mancunians (). These are generally thought to represent a Latinisation of an original Brittonic name, either from "mamm-" ("breast", in reference to a "breast-like hill") or from "mamma" ("mother", in reference to a local river goddess). Both meanings are preserved in Insular Celtic languages, such as "mam" meaning "breast" in Irish and "mother" in Welsh. The suffix -chester is a survival of Old English "ceaster" and from that "castra" in latin for camp or settlement ("fort; fortified town").
Manchester, Tennessee
A post office called Manchester has been in operation since 1817. The city was named after Manchester, in England. According to historians, "A small village, “Mitchellsville” was already in existence near the proposed site for the new county seat, but when the new county was formed, it was renamed “Manchester” after the industrial city of Manchester, England. Because of the abundance of water power, provided by the “Little Duck” & “Big Duck” Rivers, which flow through Manchester, it was hoped that it also would become a great industrial city."