I'm trying to find records on my late father-in-law. I was told by one family member that he had been in Walpole, but another family member told me it was a lesser known prison/jail. I don't know what the charge was, but it must have been pretty serious, because he seems to be missing from most family information.

I want to know how to go about finding the name of the prison and also what he was charged with. How would I do this? Any help would be much appreciated.