The Squaw Man (1918)

Captain Wynnegate leaves England, accepting the blame for embezzling charity funds though knowing that his cousin Sir Henry is guilty. Out West he and the Indian girl Nat-U-Rich save each other from the evil cattle rustler Cash Hawkins and marry. Lady Diana shows up to announce Sir Henry's death. After Nat-U-Rich's suicide Wynnegate takes his half-breed son and Lady Diana back to England as the new Earl of Kerhill.