María del Carmen Sotomayor Elzo (c.1780 – 24 September 1852) was First Lady of Chile.
She was born in Rancagua, the daughter of Francisco Sotomayor Serrano and of María de la Concepción de Elzo y Ureta, woman of Basque descent.
She married Fernando de Errázuriz y Martínez de Aldunate, served as provisional president of Chile in 1831, in Santiago on 2 October 1801, with whom he had 8 children.
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