Množina: antonomasias

ETYM Latin, from Greek, to name instead; anti + onomazein, onom name.
Use of descriptive phrase or epithet instead of proper name.
Literary device of using descriptive epithet or phrase instead of person's name; using proper name as epithet.
1. The use of some epithet or the name of some office, dignity, or the like, instead of the proper name of the person; as when is used for a king.
2. Conversely, the use of a proper name instead of an appellative, as when a wise man is called a Solomon, or an eminent orator a Cicero.

Množina: antonomasias