Sometimes I want to cite a PhD thesis of someone who has a name in three parts. The latest example I came across was "Richard Shope Davis". Shope sounds like a last name, but is there a way to know for sure? His name does not appear on Google and this kind of ambiguity seems to happen all the time for me (my work involves looking at a large number of PhD theses).
This is even harder with non-English names, for me at least. In those cases, it is often impossible to even guess whether the name in the middle is the second of two first names or the first of two last names. How does one do this?