I have examined FamilySearch and Ancestry. The FamilySearch tree covering this family, that I suspect is by Sebastian, ends with Luis Humberto's birth. I have searched the FamilySearch indices for Providencia (c1900-1920) with only the one (birth) record - for son Luis Humberto. That birth record gives no information regarding date or place of her birth or any infomation about her parents. With no given name other than "Maria" and no maternal surname one would have to scan all CHILE for a marriage or death record that might yield further information. I do not have the resources to pursue this at this time. Perhaps Sebastian will eventually succeed.