Cyrus is a 1768 tragedy by the British writer John Hoole.Nicoll p.272
The original Covent Garden cast included William Powell as Cyrus the Great, William Smith as Cambyses, Robert Bensley as Mithrades, Thomas Hull as Harpagus, Mary Ann Yates as Mandane of Media and Isabella Mattocks as Aspasia.Hogan p.1371
References
Bibliography Nicoll, Allardyce. A History of English Drama 1660–1900: Volume III. Cambridge University Press, 2009. Hogan, C.B (ed.) The London Stage, 1660–1800: Volume V. Southern Illinois University Press, 1968.