As well as holding positions at this school until 1828, in 1819 and 1820 Ampère offered courses in philosophy and astronomy, respectively, at the University of Paris, and in 1824 he was elected to the prestigious chair in experimental physics at the Collège de France.

* Alfonso Sanz y Martínez de Arizala ( 28 January 1880, Madrid – 1970 ), married in 1922 to María de Guadalupe de Limantour y Mariscal ( d. 1977, Marbella ), daughter of Julio de Limantour y Marquet ( 17 June 1863, Mexico City – 11 October 1909, Mexico City ) and wife Elena Mariscal y ..., paternal granddaughter of French Joseph Yves de Limantour y Rence de la Pagame ( 1812, Ploemeur – 1885, Mexico City ) and wife Adèle Marquet y Cabannes ( 1820, Bordeaux –?

* 1820 – The Venus de Milo is discovered on the Aegean island of Melos.

The composer Manuel Robles and the poet Bernardo de Vera y Pintado fulfilled this mandate and their " National Song " debuted on 20 August 1820 in the Domingo Arteaga theater, although other historians claim that it was played and sung during the festivities of September 1819.

The second chapter in Ecuador's struggle for emancipation from Spanish colonial rule began in Guayaquil, where independence was proclaimed in October 1820 by a local patriotic junta under the leadership of the poet José Joaquín de Olmedo.

* 1820: Venus de Milo is found on the island of Melos ( Milos ).

pt: Década de 1820

* Henri, comte de Chambord, nominally Henry V of France, ( 1820 – 1883 )

The major undertaking of this period, however, was a commission obtained in August 1820 with the help of de Pastoret, to paint the Vow of Louis XIII for the Cathedral of Montauban.

In 1820, the statue which became known as the Venus de Milo was discovered on the Greek island of Milo and seen by a French naval officer, Emile Voutier.

* Leonard Pierre Joseph du Bus de Gisignies ( 1820 – 1823 )

* Father José Francisco de Paula Señan ( 1820 – 1823 )

King Louis's nephew, the duc de Berry, was assassinated at the Paris Opera, on 14 February 1820.

The assassination of the < span lang =" fr "> Duc de Berry </ span >, the ultrareactionary son of < span lang =" fr "> Louis </ span >' ultrareactionary brother and heir-presumptive, the future < span lang =" fr "> Charles X </ span >, by a Bonapartist in February 1820, triggered < span lang =" fr "> Decazes </ span >' fall from power and the triumph of the Ultras.

Political changes in the Chamber were due to abuse by the majority tendency, involving a dissolution and then an inversion of the majority, or critical events ; for example, the assassination of the Duc de Berry in 1820.

* Mathilde Bonaparte ( 1820 – 1904 ) married Anatole Demidoff, 1st Prince de San Donato

The tricolor flag was last flown for the last time in the Battle of the Papers ( Batalla de los Papeles ), but it would appear again raised in the ships that José Miguel Career brought in 1817 and during his campaigns in Argentina ( 1820 – 1821 ).

Hawaii an sacrifice, from Jacques Arago's account of Louis de Freycinet | Freycinet's travels around the world from 1817 to 1820.

William Jasper Blackburn, a Reconstruction U. S. Representative from Louisiana, was born on the Fourche de Mau in Randolph County in 1820.