Ionas

A modern Greek form Ion, a name that belonged to a mythological Greek king of Achaea. It is said that the Ionians, the region of Ionia, and the Ionian Sea are all named after him. Less commonly, Ionas is used as the Greek form of Jonah – in which case it's pronounced with emphasis on the last syllable instead of the first.

Pronounced eye-OH-nuhz.