Its one of the things I love about FindMyPast. 
But can you explain a mystery? Here is the entry from the Horningsham parish records on Ancestry, but it doesn't seem right:
- Years ago I drove down from N Wales (where I live) to Wiltshire, studied the archives, and wrote 'Custer'
- The transcriber on FindMyPast clearly did the same
- A few weeks ago I studied the digitised archive on-line and again clearly read and wrote 'Custer'.
- But if you look at the attachment taken from the parish records, neither of the entries about Nicholas says 'Custer'. So obviously, I happened upon on-line, and was shown (in Wiltshire) a document which the transcriber also used, but
I cannot find it again online. Presumably it was Bishop's Transcripts. It may hold many other gems of information for I think 'Custer' was my great***grandfather. What was the elusive document, and how can I find it again on-line (for Wiltshire is very far away)?