Christopher Hibbert: George IV (1762-1830). Pelican Biographies, Penguin Books.

This is one of the most satisfying biographies of an English king: it is ample, convincing and well written… the first merit of Mr Hibbert’s book is that from beginning to end he catches hold of the King’s personality and refuses to let go. He does not attempt to teach or instruct but leaves us to form our own judgments. - The Times Literary Supplement. (Excerpt of Backcover text)

Author

Christopher Hibbert (b. 1924 Leicestershire, England - 2008 Henley-on-Thames) was an English writer, historian and biographer. He has been called "a pearl of biographers" and "probably the most widely-read popular historian of our time and undoubtedly one of the most prolific". Hibbert was a Fellow of the Royal Society of Literature and the author of many books, including The Story of England, Disraeli, Edward VII, George IV, The Rise and Fall of the House of Medici, and Cavaliers and Roundheads. 

Christopher Hibbert, Wikipedia (en)