'' by
Alexandre Menjaud. The February 1820 assassination led to an
Ultra-Royalist backlash and Decazes was replaced as Prime Minister by the
Duke of Richelieu.
General Dessolles and Baron Louis, refusing to embark on this policy, then resigned; thus Decazes became the new head of government, as president of the council (November 1819). The exclusion of Grégoire from the chamber and the changes in the
franchise embittered the radicals also without reconciling the "Ultras." The news of the
revolution in Spain in January 1820 compounded matters, as the royal
favourite was accused by his opponents to have begun another revolution; and when, on 13 February,
Charles Ferdinand, Duke of Berry, the only member of the royal family expected to ensure royal succession, was assassinated; he was accused of being an accomplice in the crime. Decazes, foreseeing the storm, at once offered his resignation to the
King. Louis at first refused. "They will attack", he proclaimed, "not your system, my dear son, but mine"; but in the end, he was forced to yield to the importunity of his family (17 February). Decazes, raised to the
rank of duke, passed into honourable exile, being posted as
Ambassador to Britain. This ended Decazes' ministerial career. In December 1821, he returned to sit in the
House of Peers, where he continued to voice his Liberal opinions. After 1830, he adhered to the
July Monarchy, but after 1848, he remained firmly in retirement. In 1826, Decazes formed an association to represent the coal and iron industries in
Aveyron. The name of
Decazeville was given to the industry's regional centre in 1829. ==Honours==