In 1870-72, John Marius Wilson's Imperial Gazetteer of England and Wales described Dilton like this:
DILTON, a chapelry in Westbury parish, Wilts; on the Westbury and Yeovil and the Somerset and Wey-mouth railways, 2 miles SW of Westbury. Post town, Dilton-Marsh, under Westbury. Pop. returned with the parish. Dilton Court is the seat of Col. Phipps. The living is a p. curacy, annexed to the vicarage of Westbury, in the diocese of Salisbury. The church is old and small.
Additional information about this locality is available for Westbury
GB Historical GIS / University of Portsmouth, History of Dilton in West Wiltshire | Map and description, A Vision of Britain through Time.
Date accessed: 28th March 2017
Click here for more detailed advice on finding places within A Vision of Britain through Time , and maybe some references to other places called " Dilton ".