Brian Charles Southam is a former academic and publisher. He has written many books on the works of Jane Austen and T. S. Eliot, and is the editor of Jane Austen's Literary Manuscripts (Continuum, 2006).
I wanted a short refresher on the poems and I suppose this provided that though with these kinds of things you always have to side-eye some of the choices of the writer (i.e. explaining Juliet's tomb while leaving some more obscure stuff unannotated....)