Appearing in January 1818, The Revolt of Islam was a significantly revised and re-issued version of Laon and Cythna; or The Revolution of the Golden City, which Shelley had composed between the spring and early autumn 1817 and Charles Ollier had first published in December 1817 and, then, fearing prosecution, quickly withdrawn from publication. The judicious changes made to Laon and Cythna, before its re-issue as The Revolt of Islam, included altering specific phrases that pertained to the subject of religion and the precise nature of the relationship between the male and female protagonists of the poem (explicitly brother and sister in the original version), as well as the removal of the Preface’s …
Sandy, Mark. "The Revolt of Islam". The Literary Encyclopedia. First published 25 August 2004; last revised 30 November -1.
[http://www.litencyc.com/php/sworks.php?rec=true&UID=7582, accessed 21 April 2015.]