It's the name of a Greek island.
Io was a Naiad Nymph daughter of river Inakxos and Zeus. Her alternate name is Kallithyia meaning fine offerings to gods.
Argus
Io is an ancestor to Perseus
There are lots there but a few that spring to mind are Io, Echo, Anchiroe, Merope and Adrasteia.
Io
Io is one of the moons of Jupiter, which was named after the Roman counterpart to the Greek god Zeus. Io was named after a woman in Greek mythology who had an affair with Zeus.
All of the moons of Jupiter with names are named after lovers of the Greek god Zeus or his Roman equivalent Jupiter. Io was one of those lovers.
Io was not a goddess, but once she went to Egypt, she was worshipped as Isis.
Io Bottoms's birth name is Io Cecilia Bottoms.
Hera named the Ionian Sea after Io because in Greek mythology, Io was a priestess of Hera who was turned into a cow by Zeus to hide his affair with her. Hera discovered Zeus's infidelity and sent a gadfly to chase Io across the sea, eventually leading to her transformation into a goddess. Naming the sea after Io served as a reminder of her sacrifice and suffering.
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The accepted scientific name is Automeris io.