In 1870-72, John Marius Wilson's Imperial Gazetteer of England and Wales described Semington like this:
SEMINGTON, a chapelry in Steeple-Ashton parish, Wilts; on the Kennet and Avon canal, near the Mid Wilts railway, 2 miles E S E of Holt-Junction r. station, and 3½ N E of Trowbridge. It has a post-office under Trowbridge. Real property, with Littleton, £3, 308. Pop. in 1861, 427; of whom 160 were in Melksham workhouse. Houses, 60. The living is a p. curacy, annexed to Staple-Ashton. There are a Wesleyan chapel and a national school.
A Vision of Britain through Time includes a large library of local statistics for administrative units. For the best overall sense of how the area containing Semington has changed, please see our redistricted information for the modern district of West Wiltshire. More detailed statistical data are available under Units and statistics, which includes both administrative units covering Semington and units named after it.
GB Historical GIS / University of Portsmouth, History of Semington in West Wiltshire | Map and description, A Vision of Britain through Time.
Date accessed: 19th December 2014
Click here for more detailed advice on finding places within A Vision of Britain through Time, and maybe some references to other places called "Semington".