Stephen Donnachie, Royal Studies Journal
"... a wide-ranging and immensely readable work. Perry writes well and has a light-hearted but scholarly turn of phrase that makes this book a pleasure to read ... this study will be the fundamental point of reference on this subject for many years to come."
Nicholas Morton, History
"So unlikely, so varied and highly coloured can John of Brienne's career appear to us that the relative lack of attention it has received from historians is all the more surprising. Guy Perry's assured and very readable new study of John is the first full-length treatment of his career since 1938. Since then, of course, crusading historiography has changed almost out of recognition, and Perry's John of Brienne is a very different and more nuanced figure."