Well, I suppose that you would think finding William Huxtable Ball and his family would not be too hard. They emigrated to Wales sometime around 1858-1861 and seemed to have stayed put through the following decade...or so I thought.
I searched high and low for the family in the 1871 census, but kept coming up with dead ends. Looked for everyone in the family, looked for them in Devon, looked or them in neighbouring counties, checked the census on Find My Past - still nothing.Only when I read the source description in Ancestry, which detailed how parts of the 1871 for the county of Glamorgan had been lost, then I realized that my searching was in vain. It pays to read the fine print...and likely will save your eyesight and sanity in the long run.
In any case, my best guess would be that the family remained in Scurlage Castle, Glamorgan, as we shall see next...