The Trail-Hunter by Gustave Aimard — Read

Nathan was not asleep, as Ellen supposed, when she urged on Shaw to devote himself to liberate Dona Clara, and he had listened attentively to the conversation. Nathan was a man of about thirty years of age, who, both physically and morally, bore a marked resemblance to his father. Hence the old squatter had concentrated in him all the affection which his uncultivated savage nature was capable of feeling. Since the fatal night, when the chief of the Coras had avenged himself for the burning of his village and the murder of its inhabitants, Nathan's character had grown still more gloomy; a dull and deep hatred boiled in his heart against the whole human race; he only dreamed of assassination: he had sworn in his heart to revenge on all those who fell into his hands the injury one man had inflicted on him; in a word, Nathan loved none and hated everything.

When Shaw had disappeared among the bushes, and Ellen, after taking a final glance around to convince herself that all was in order, re-entered the hut that served her as a shelter, Nathan rose cautiously, threw his rifle over his shoulder, and rushed after his brother. Another reason urged him to foil Shaw and Ellen's plans; he had a double grudge against Don Miguel -- the first for the stab the Mexican gentlemen had given his father; the second because Don Miguel had compelled him to leave the forest in which his family had so daringly installed itself.