"El abuelo (Novela en cinco jornadas)" by Benito Pérez Galdós is a novel published in 1897. Count Albrit returns from Peru to Spain, impoverished and nearly blind, only to discover a shocking family secret: one of his two granddaughters is illegitimate. Determined to identify his true blood heir, the proud aristocrat embarks on a painful quest that will challenge everything he believes about honor, lineage, and family. What he ultimately discovers transforms his understanding of what truly matters in life.