"SWANWICK is a hamlet, in the parish of Alfreton, about a mile and a half S.W. from that town. There are places of worship for baptists and Wesleyan methodists, and a free-school, erected and endowed in 1740 by Mrs. Elizabeth Turner. Population returned with the parish."
[Description from Pigot and Co's Commercial Directory for Derbyshire, 1835]
The name is pronounced "Swon-nick." The parish covers 965 acres.