Gracious
Eion is a phonetic spelling variant of the Scottish Gaelic name Eoin, which is the equivalent of John. It ultimately derives from the Hebrew name Yochanan, meaning 'God is gracious'. While rare in the United States, it retains a strong connection to Celtic heritage.
Less common today
Eion isn't in the latest US Top 1000. It last peaked at #2,846 in 2000.
American actor known for 'Band of Brothers' and 'Once Upon a Time'
Welsh actor (often spelled Ioan)
US births per 5-year period, 1990βpresent (SSA data).