The Crow's Nest.

Esteban, a white boy, is raised by an Indian squaw, who believes she is his mother and from whom Beaugard steals the papers documenting Esteban's birth and his right to inherit a ranch. When he grows up, Esteban falls in love with Patricia Benton, Beaugard "exposes" Esteban to Patricia, and the villain taunts the boy, telling him that he has no right to a white woman.