In 1870-72, John Marius Wilson's Imperial Gazetteer of England and Wales described Bishopston like this:
BISHOPSTON, or Llan-Deilo-Vernalt, a parish in Swansea district, Glamorgan; near Bishopston-Road r. station, and 6 miles SW by W of Swansea. It includes Killay village: and has a post office under Swansea. Acres, 2,387. Real property, £2,101. Pop., 418. Houses, 99. The property is much subdivided. ...
The manor belonged to the Bishops of Llandaff. Interesting features of limestone rock occur in a wooded glen; and lead ore has been worked. The living is a rectory in the diocese of St. David's. Value, £248.* Patron, the Bishop of Llandaff. The church has an embattled tower, and is good. E. Davies, author of the "Celtic Researches," was rector.
GB Historical GIS / University of Portsmouth, History of Bishopston, in Swansea and Glamorgan | Map and description, A Vision of Britain through Time.
Date accessed: 25th April 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 " Bishopston ".