Bonanza: S1 E31 - Dark Star Bonanza

Little Joe comes upon a gypsy girl. Frightened, she runs and falls becoming unconscious. When she wakes, they discover that she believes she is bewitched and so do her people who banished her. Her birth under a dark star has fostered this belief. Little Joe, smitten, must rescue her from this belief, her people and someone posing as a wolf.