Iris-deity

The personification of the rainbow in ancient Greek religion and mythology
In ancient Greek religion and mythology, Iris is a daughter of the gods Thaumas and Electra, the personification of the rainbow and messenger of the gods, a servant to the Olympians and especially Queen Hera. Iris appears in several stories carrying messages from and to the gods or running errands but has no unique mythology of her own. Wikipedia

Abode Mount Olympus (possibly)
Symbol Rainbow, caduceus, pitcher (container)
Consort Zephyrus

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