Carlo Andrea Pozzo Di Borgo, count, a Russian diplomatist of Corsican origin, born at Alata, near Ajaccio, March 8, 1764, died in Paris, Feb. 15,1842. He completed his studies at the university of Pisa, and became an advocate at Ajaccio. His intimacy with the Bonaparte family came to an end in 1790, when he became a follower of Paoli. He represented Corsica in the French legislative assembly in 1791-2, but the discovery of a letter addressed by him to Louis XVI. obliged him to return to Corsica, where he was associated with Paoli in governing the island under English protection, and became president of the council and secretary of state. In October, 1796, after the expulsion of the British, he fled to England. In 1798 he went to Vienna to effect a coalition between Austria and Russia against France, accompanied Suvaroff in his campaign of 1799, and in 1803 entered the Russian service as councillor of state. As commissioner he was despatched in 1805 to the Russian, English, and Neapolitan army in Italy, and subsequently on various missions to Prussia and Austria. On account of the friendly relations entered into by Alexander and Napoleon, Pozzo left the Russian service in 1808, but reentered it after the close of the campaign of 1812. His whole influence was constantly exerted to keep Alexander steadfast in the war against France, and to gain Sweden for the allies, in which he succeeded.

In the beginning of 1814 he went to London to secure the active cooperation of England, strenuously advocated the occupation of Paris, and in the congress of Chatillon opposed accepting the offers of Napoleon. After the abdication of the emperor he was made Russian commissioner to the provisional government of France, attended the congress of Vienna, and afterward was ambassador at the French court. He was slightly wounded at the battle of Waterloo. After the second restoration he was offered by Louis XVIII. the post of minister of the interior, but declined it, and as Russian ambassador signed the treaty of Paris in 1815. In 1823 he went on a mission to Madrid, and after the accession of Nicholas in 1825 was created a count. He was ambassador at Paris when the revolution of 1830 broke out, and on the arrival of the news of the fall of Warsaw in September, 1831, the populace came near storming his residence. Subsequently he was ambassador in London till 1839, when he retired. He was never married. - See Notice oiographique sur le comte Pozzo di Borgo, by Vuhrer (Paris, 1842).