Aaron has been in and around the Top 50 for nearly half a century at this point, and is still an attractive, timeless choice. The softness of Aaron's initial double vowel gives it an appealing gentleness.
In the Old Testament, Aaron, the older brother of Moses who was appointed by God to be his brother's spokesman, was the first High Priest of the Israelites.
Notable namesakes include Aaron Burr and composer Aaron Copland -- and currently, Aaron Eckhart and Aaron Paul. Aaron has appeared in works by Shakespeare, James Fenimore Cooper and George Eliot.
Elvis's middle name was spelled ARON, one of several variant spellings, such as Arun. The Hebrew version is Aharon -- in Yiddish it can be Aaran -- and the name appears in Arabic as Haroun or Harun.
There are plants known as Aaron's Rod and Aaron's Beard.