David Rhys Williams wrote about what theory that Marlowe was the author of Shakespeare plays? 
David Rhys Williams: David Rhys Williams (1890 – March 28, 1970) was an American Congregational and Unitarian minister who wrote a Marlovian book called "Shakespeare Thy Name Is Marlowe". Marlovian theory of Shakespeare authorship: The Marlovian theory of Shakespeare authorship holds that the Elizabethan poet and playwright Christopher Marlowe was the main author of the poems and plays attributed to William Shakespeare.
i don't know