A Chat leads to more

I was given the opportunity to go down to Mexico to have an interview with one of the locals, a dentist known as Mr. Tench. He told me about some of the basic living conditions of the area, like the water not being the best choice for a drink, and the limitations he was forced to deal with. Mr. Tench had a drill from Japan which was quickly wearing down and he could not afford to get a better quality one from America. As interesting as hearing about how he had to use sand to cast teeth, it was the story of a mysterious visitor that got my attention.
A strange man who had claimed to be a doctor once overheard Mr. Tench talking in English at the docks. The two men had taken to talking before ending up back at Mr. Tench's dwelling to enjoy some brandy on what was a rather hot day. Mr. Tench had told the other man much of what he had told me about, his dentistry, his children, and his desire to leave Mexico. What piqued my interest in the stranger was what he left behind. A book that was printed in Latin. Perhaps I'll be able to find more information about this stranger, and the book he left behind.