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No, but one of the characters is named Nymphadora Tonks.
Nymphadora Tonks.
Her full name was Nymphadora Tonks. She sometimes went by the name Dora or Nymph, but preferred to be called by just her surname, Tonks.
Yes, Bellatrix (Black) Lestrange's sister is called Andromeda (Black) Tonks and Nymphadora is her daughter.
English (Midlands): patronymic from a pet form of the personal name Thomas, an Aramaic name meaning "twin".