Persephone's patron city is Eleusis, located near ancient Athens. This city was famous for the Eleusinian Mysteries, religious rites held in her honor, which celebrated the cycle of life and death and the changing seasons. The myths surrounding Persephone and her abduction by Hades were central to these rituals, symbolizing the agricultural cycle and the renewal of life.
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Athens was the city Athena is patron for. It was named after her.
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Demeter
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Persephones grandparents were Crouns and Rhea on bothe sides. Her motehr was Demter and father was Zeus, and Zeus and Demter were siblings.
The city-state for which Artemis was patron for was Sparta.
All people die no matter the city, so no Persephone was not a patron goddess of any place or city.