Evaemon (Euaemon) is the name of one of the fourth pair (with Ampheres) of twins who became the first kings of Atlantis.
Frank Joseph identifies Euaemon with the ‘pre-Celtic’ king of Ireland, Eremon. This somewhat incorrect as the Milesians are generally accepted as having been Celtic. Eremon was one of eight Milesian brothers who invaded Ireland from Spain and defeated the Tuatha dé Danaan. It is interesting that Eremon had a brother, Eber Finn, with whom he shared control of Ireland, with Eber ruling the south and Eremon ruling the north. This arrangement was short-lived as they fought against each other leading to Eber’s death and Eremon ruling a united Ireland.