Study of multiple interests of an author

Is there a literary theory or school of thought that analyses an author as a literary nodal point? As in let's say, an author is a literary critic, a translator, an anthologist, an editor and more. Is there a way that the complete oeuvre of such an author can be studied? Not a part, as in Pound as editor, but all this in tandem. Would be very glad for an academic monograph that deals with something like this. Thank you.