Inspector General of the Russian Cavalry, Grand Duke Konstantin took part in Suvorov's Italian and Swiss campaigns, in the wars with Napoleon of 1805-1815. According to contemporaries, Konstantin, both in appearance and in character, was more like his father than other brothers: he was an honest, straightforward, courageous man, but was distinguished by rudeness, unpredictability of behavior and frequent outbursts of rage. Historians consider the main event in the life of the second son of Paul I to be his marriage with Polish Countess Joanna Grudzinskaya: the condition of the marriage was that the Tsarevich renounced the right to inherit the throne. A new novel by the modern writer Z. Chirkova tells about the life and fate of the second son of Emperor Paul I, Grand Duke Constantine (1779-1831).