In the 24 years he was a volunteer, participated in the assault of Ishmael, and five years later settled permanently in Russia. In 1803 Richelieu was the governor-general of Odessa.
Local residents called it "our Duke" and considered the founder of the city, although by that time, Odessa was already 8 years old. Efforts of the new Mayor the city has become a major trading port.
When returned to a Bourbon throne, Duke, as a staunch monarchist, departed for France to lead the government of Louis XVIII. He died May 16, 1822 at the age of 56 years in Paris.

  While the territory of present-day Odessa people began to settle back in ancient times, the history of the city is well known from 1415 as the city Codjabey (Turkish - Hacıbey).
In the middle of the XVIII century. all belonged to the Northern Black Sea Crimean khans - vassals of Turkey. Given the weakness of the latter, the Russian Empire beginning of the war for the implementation of the so-called Greek project, the essence of which was to take possession of the Balkans, creating two vassal state. At the ruins of the Turkish Empire, was planned to revive the ancient Power: Dacia in place of Romania and Byzantium with its capital in Constantinople. Last Emperor was to become the second grandson of Catherine II, specifically named Constantine. Byzantine Empire, in addition to Greece and the coast of Asia Minor was also placed on the lands of the Northern Black Sea, so the new city is to receive the names of Greek origin - Mariupol, Kherson, Olviopol, Sevastopol, Simferopol, Nikopol, Tiraspol, Ovidiopol, Odessa.
First of all, dealt with three challenges:
  1) to weaken Turkey, depriving her of the active capacity;
  2) of the former Turkish nationals form the respective military units (Greek battalion, regiment Arnautskaya, etc.);
  3) create an economic, military, the demographic foundation for the future Byzantine Empire.
September 14, 1789 squad, Vice-Admiral I.Deribas, with the detachment of the Black Sea Cossacks, was taken Cadjabey fortress (Yeni Dünya). After the war, the site of the village is a few houses and the ruins of the castle.
At the end of 1791 at the site decided to create a paramilitary fortress town sailors to the Mediterranean fleet. His project on the basis of maps of war was in St. Petersburg military engineer of Dutch origin Franz P.Devolan.
In 1792 engineer A.Shostak studied area, held a survey. In the same year, F.Devolan in accordance with the nature of the relief to finalize the draft. The project provides, besides placing the port and residential neighborhoods, creating a major urban area in the deployment of the cathedral church.
In 1793 I.Deribas, F.Devolan and A.Shostak examined the Black Sea coast. The most convenient for shopping and the main port city recognized territory and harbor Codjabey.
As a result, May 27, 1794 a decree was issued on the basis of Hadzhibeya and approved the initial plan, developed by F.Devolan.
In August 1794 a bookmark port city and the Orthodox churches.
  Since the early 19 th century the town begins to grow rapidly in the export of grain, Odessa soon became one of the most important trade centres of the country. The city has been rapidly increasing population, industrial development begins. In just one century Odessa has evolved from a modest settlement in the outskirts to the centre Novorossii and the fourth largest city in the Russian Empire (after St. Petersburg, Moscow and Warsaw).