Calmsden is a hamlet in the civil parish of North Cerney, in the Cotswold district, in the county of Gloucestershire, England. In 1870-72 the tything had a population of 65.
Etymology The name of Calmsden is first attested in a thirteenth-century copy of a charter of 852, in the forms Kalemundesdene and Calmundesdene, and in a twelfth-century document in the form Calemundesdene. The name is thought to derive from an Old English personal name in its genitive form , compounded with the noun ("valley"). If so, the name once meant "Calumund's valley"., s.v. Calmsden.
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