Symons, Alphonse James Albert. <br/><br/>
The quest for Corvo :  an experiment in biography. 

 -  Penguin,  1966. 
 - 298p. 
<br/><br/> Originally published, Cassell, 1940. 
<br/><br/><label>Subjects--Personal Names: </label><br/>Rolfe, Frederick, Baron Corvo.