The last child of William Huxtable Ball and Charlotte Balment was my great-grandfather, Thomas Huxtable Ball. Thomas was born in 5 July 1875 in Scurlage Castle, Llanddewi, Glamorgan, Wales. The occupation of his father, William, is listed as a blacksmith.
You can find more information about Scurlage here from the Glamorgan-Gwent Archaeological Trust.
I've found an Ordnance Survey map which shows Scurlage Castle, which was located between Knelston and Scurlage. You can view it here here. The OS reference is SS462882, if you need to re-enter the reference code.