What is the theme in The Californios by Louis L'Amour?

Pride is one of the main themes in the book. Even though the Mulkerins have suffered through some hard times and are on the verge of losing their home, pride will not let them be shamed into running away from all that they have built. This pride is fueled mostly by Eileen, whose Irish blood causes her to be strong, independent and not easily ruled. Additionally, the pride comes from temper. Eileen's temper is fueled when Wooston wants to take the land. Eileen knows that she owes the money, but Wooston's methods are uncouth and his motives are unethical.