Was Persephone a patron of any Greek city?

Yes, Persephone was a patron of the city of Eleusis in ancient Greece. She was often worshipped in Eleusis alongside her mother Demeter, and the city was the site of the Eleusinian Mysteries, a major religious festival in ancient Greece that celebrated the myth of Persephone's abduction by Hades and her return to the earth each spring.