The book is devoted to a new scientific direction - the study of the ancient and medieval chronology of Russia, based on the research of A.T. Fomenko and G.V. Nosovsky. What could be the real name of the national heroine of France, Joan of Arc? Where is it possible she was born and what place in society, most likely, actually occupied? What was the official title of the Russian emperors before the arrival of the Romanovs?