 Gwendolen , though , still insists that she can only love a man named Ernest . What is her fiancé 's real first name ? Lady Bracknell informs Jack that , as the first @-@ born , he would have been named after his father , General Moncrieff . Jack examines the army lists and discovers that his father 's name — and hence his own real name — was in fact Ernest . <unk> was reality all along . As the happy couples embrace — Jack and Gwendolen , Algernon and Cecily , and even Dr. Chasuble and Miss Prism — Lady Bracknell complains to her newfound relative : " My nephew , you seem to be displaying signs of triviality . " " On the contrary , <unk> Augusta " , he replies , " I 've now realised for the first time in my life the vital importance of being Earnest . " 
