Yes Monica, that is my next best hope I think.
This is especially frustrating as the rest of my family research has been relatively straightforward and has produced good results from some fairly straightforward work. Relatively regular families, staying within certain localities over the centuries.
Then this more transient situation with a less stable family context and all the confusion around what was deliberate obfuscation, what was mistold, misremembered etc.
But I won't leave it alone ...
I do appreciate the suggestions here

Thanks everyone.
Stewart