And this is Nymphadora-"
"Don't call me Nymphadora, Remus," said the young witch with a shudder. "It's Tonks."
"-Nymphadora Tonks, who prefers to be known by her surname only," finished Lupin.
"So would you if your fool of a mother had called you 'Nymphadora,' " muttered Tonks.

Autore: J.K. Rowling