Land of Eire; peace
A modern American invention, Irelynn likely combines the name of the country Ireland (Eire) with the popular suffix -lynn. It is often chosen by parents looking to honor Irish heritage with a contemporary, rhythmic sound. While its components suggest 'land of peace,' it functions primarily as a creative phonetic blend.
Less common today
Irelynn isn't in the latest US Top 1000. It last peaked at #1,912 in 2008.
US births per 5-year period, 1990βpresent (SSA data).