polyonymous (pol-ee-ON-uh-muhs) adjective

Having or known by many names.

[From Greek polyonymos, from poly- (many) + -onyma (name).]

“She (Hecate) protects roads and she is polyonymous, she has lots of
Michael P. Clark; Revenge of the Aesthetic: The Place of Literature
in Theory Today; University of California Press; 2000.

“The Antonine dynasty polyonymous senator whose names included
‘Velleius Blaesus’.”
Anthony Birley; Marcus Aurelius; Routledge; 2000.

This week’s theme: words to describe people.