Elizabethan Recusant Prose

Sometimes, I come across a book that reminds me of how little I actually know. I’ve read a lot of books over the years, but as I’ve said elsewhere, my learning is broad but shallow. So, I always appreciate reading an author with true depth of knowledge is a specialised subject - e.g., A. C. Southern’s Elizabethan Recusant Prose: 1559-1582. Who is A. C. Southern? I actually couldn’t find much about him, except that this work is a revision of his Ph.