The book "The History of the Four Georges and William IV, Volume IV" is the fourth book in a series of studies by the famous historian Justin McCarthy about the English monarchs of the 18th and 19th centuries. In this part, the author talks about the reign of King William IV and the last years of the Hanoverian dynasty. McCarthy examines the political and cultural events of the time, the fate of the royal family, and the general context of British history. Thanks to his accurate analysis and his own approach to the presentation of facts, this book is interesting not only for historians, but also for a wide range of readers interested in the history and culture of English society.