Gracious
Eann is a rare phonetic spelling of the Scottish Gaelic name Iain, which is the Scottish form of John. It ultimately derives from the Hebrew name Yochanan, meaning 'Yahweh is gracious.'
Less common today
Eann isn't in the latest US Top 1000. It last peaked at #7,911 in 2012.
US births per 5-year period, 1990βpresent (SSA data).