I think it's called "Clara".

“The suspicions which had just arisen of Mr. Darcy and their niece, directed their observation towards each other with an earnest, though guarded, enquiry; and they soon drew from those enquiries the full conviction that one of them at least knew what it was to love. Of the lady’s sensations they remained a little in doubt; but that the gentleman was overflowing with admiration was evident enough.”