1823 deaths

Don Luis María Cardinal de Borbón y Vallabriga, Farnesio y Rozas (22 May 1777 – 19 March 1823) was the 14th Count of Chinchón (1785–1803), Grandee of Spain First Class (4 August 1799), with a coat of arms of Bourbon, and 1st Marqués de San Martín de la Vega.
He was born in Cadalso de los Vidrios as the son of a morganatic marriage between Luis de Borbón y Farnesio, Infante of Spain, 13th Count of Chinchón, and María Teresa de Vallabriga y Rozas, Español y Drummond.

Juan Antonio Llorente, ORE (March 30, 1756 in Rincón de Soto (La Rioja), Spain – February 5, 1823 in Madrid) was a Spanish historian.

Daniel Gottlieb Steibelt (22 October 1765 – 2 October [O.S. 20 September] 1823) was a German pianist and composer. His main works were composed in Paris and in London, and he died in Saint Petersburg, Russia.

Franz Graf zu Erbach-Erbach (29 October 1754 – 8 March 1823) was a German nobleman and art collector.

Carlo Verri (1743–1823) was an Italian politician.
Born in Milan, he was the brother of literates Alessandro and Pietro Verri. During the Napoleonic suzerainty in Italy, he was deputy and prefect in the Italian Republic and the Kingdom of Italy. In the town of Biassono there is now a museum dedicated to him .He died at Verona.