Martínez de Rozas, Juan (hwän märtēˈnās dā rōˈsäs) [key], 1759–1813, Chilean revolutionist, b. Mendoza, Argentina. A lawyer and scholar, he was a leading instigator of revolutionary ideas. In 1810 he headed the junta that deposed the Spanish governor, but the next year he was forced out because his ideas were too radical for the more conservative element of the revolution. Subsequently opposing the military dictatorship of José Miguel Carrera, he was exiled and died at his birthplace.
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