I found this map using a link kindly provided for me by davidr recently.
http://www.british-history.ac.uk/mapsheet.asp?sheetid=4635&ox=700&oy=466&zm=1&czm=1&x=424&y=19
There were 2 Ballavales in 1870 in that area, only one now at Santon on Multimap.
Susan