“You keep using that word. I do not think it means what you think it means.” -Inigo Montoya, The Princess Bride.

Are you understanding your sources fully? Or are you missing parts and pieces, or worse yet, are you misunderstanding what your source is or what it is saying? Spend some time researching the process that generated the document you are looking at, and research any terms that you don't fully understand. You might be surprised what you find. 

The Legal Genealogist