Background
Canaveris was born in Buenos Aires, he studied at the National College.
Canaveris was born in Buenos Aires, he studied at the National College.
He collaborated in the early days of government of Juan Manuel de Rosas. In 1819 is enlisted in the Argentine Army, was retiring in 1821, as Ensign in the Húsares de Buenos Aires regiment. In the early 1830s, Canaveris served as procurator in the government of Rosas.
The jury was composed of leading figures of the time as Juan Martín de Pueyrredón, Miguel de Azcuénaga, Tomás de Anchorena and his father José Canaveris.
Pursued by supporters of Rosas, Canaveris was forced into exile in Montevideo. In 1839 he participates in meetings organized by Juan Bautista Alberdi and Valentín Alsina where was treated the problem of the French blockade of the Río de la Plata.
On February 16, 1843 during the Great Siege of Montevideo, Canaveris was enlisted as soldado raso (private), a fact which caused him great pain because of his high social status. Juan Manuel Canaveris also was dedicated to trade and import, had a warehouse in the Catedral street (now San Martín), in the neighborhood of San Nicoláson
Canaveris had maintained business relations with the Hodgson & Robinson Company, importers from Manchester in Buenos Aires.
In 1826 he was interested in acquiring hectares near the Salado River, in the current town of Bragado. Juan Manuel was the third son of José Canaveris and Agustina Denis, possible descendant of Anton Denis, native of Limerick. Juan Manuel Canaveris married on August 21, 1842 with María del Carmen Gutiérrez, born in Montevideo.
Parents of Emilia, Ángel, Juana, Haydeé, Elia, Samuel and Carmen Francisca.
In 1833, he was appointed alternate member of the jury responsible to guarantee press freedom in the republic.