Eain is a rare and unique name of Scottish origin, derived from the Gaelic word 'Eachann', which means 'one'. It is believed to have evolved from the ancient Scottish personal name 'Echan', found in some early Scottish records. The variant spellings Eagan, Eagon, Eakin, and Eaken are sometimes encountered, but Eain remains the most common form of this distinctive name.
The name Eain experienced fluctuating popularity with a notable peak in the years 2006 and 2008, each having 10 births. The total number of births recorded between 2000 and 2015 is 76.