She was born in Santiago, the daughter of President Federico Errázuriz Zañartu and former First Lady Eulogia Echaurren García-Huidobro, and sister of President Federico Errázuriz Echaurren. On 7 January 1880, she married Germán Riesco, her first cousin via her father's sister, Carlota Errázuriz Zañartu.[1] The couple had eight children together, including Germán Ignacio Riesco Errázuriz, a twice-appointed Minister of Chile.[2]