Eumenides

Eumenides, also called Erinyes, the name given to the Three Furies - Alecto. Megeera, and Tisiphone. The name of Eumenides, or "Wellwishers," was given to avoid offending them, in the same way that the Fairies are called the Good People; while that of Erinyes has no Greek signification, but is said to be traceable from Sanskrit. They were the avengers of blood, and as such are commemorated by AEschylus in the Eumenides. Probably the conflict there depicted between them and Apollo indicates the introduction into Athens of a new worship displacing the matriarchate by male kingship.