The name Eamon is a boy's name of Irish origin meaning "wealthy protector". Eamon and is often added to lists like Irish Boy Names - Baby Names and discussed in our forums with posts like "Yes or No".
From the experts:
Eamon is one of the traditional Irish names that has not yet emigrated to the US. This Irish name pronounced ay-mon was popularized by early president of the independent republic Eamon de Valera (birth name George), who was born in the United States to an Irish mother and a Cuban father. Eamon definitely has possibilities as a successor to the epidemically popular Aidan/Aiden.
Though it may be an older generation name in Ireland, it would sound fresh elsewhere.
The original spelling of the name is Eamonn.