Dolores Jane Umbridge, by J.K.rowling:
"Umbridge's names were carefully chosen. 'Dolores' means sorrow, something she undoubtedly inflicts on all around her. 'Umbridge' is a play on 'umbrage' from the British expression 'to take umbrage', meaning offence. Dolores is offended by any challenge to her limited world-view; I felt her surname conveyed the pettiness and rigidity of her character."