Question: What is the date of death of Nicolasa Valdés's husband?
Sentence (from "Mateo de Toro Zambrano, 1st Count of La Conquista"): Field Marshal Mateo de Toro Zambrano y Ureta  (September 20, 1727 – February 26, 1811), frequently misnamed Mateo de Toro y Zambrano in many Chilean history publications, was Viscount of La Descubierta and later Count of La Conquista (1771) and Knight of the Spanish Order of Santiago.
Relevant evidence: Yes