Encyclopedia Britannica - Vittoria Accoramboni
http://www.britannica.com/EBchecked/topic/3010/Vittoria-Accoramboni
The Encyclopedia Britannica entry on Vittoria Accoramboni, the historic counterpart to Vittoria Corombona.
John Webster
http://www.imagi-nation.com/moonstruck/clsc27.html
A short biography on the Elizabethan playwright. This website touches upon his two most famous works, The White Devil and The Duchess of Malfi.
Elizabethan Playhouses, Actors, and Audiences
http://www.theatrehistory.com/british/bellinger001.html
A lengthy description of British theater during Webster's lifetime.
Revenge Play
http://www.shakespeare-online.com/playanalysis/revengetragedy.html
An article detailing the characteristics of Elizabeth revenge tragedy, the genre of The White Devil.