Religion and politics had much to do with the life of Mary Stuart. Understanding this context and the people involved in the conflicts of the day, will help the genealogist to explore the family tree. Such is the case in my own family tree climbing. The trail of "Mary Queen of Scots" is one event in this period of my family.
Primary documents are the principal source of information. The book by Jayne Elizabeth Lewis provides such source. Published 1999 by Bedford/St. Martin's, Boston, it gives many of the records of this trial. [The trail of course leading to the execution of poor Mary.] Babington's plot played a major role in this story. Sorting through my own family's involvement was a major genealogical undertaking. Books like the one shown helped.