This book is the final one in the Collected Works of E.P. Kovalevsky. (1809–1868), diplomat, traveler, scientist, public figure. This is an essay about a prominent official of the 19th century, Dmitry Nikolaevich Bludov (1785–1864), the main events of the first half of whose life unfold against the backdrop of the transformations of Alexander I, the Decembrist uprising and the subsequent reaction. The publication will be appreciated by everyone who is interested in history and tries to make up their own about it , unbiased opinion.