From Hadria; dark one
Adren is a rare variant of Adrian, which is derived from the Latin name Hadrianus. It originally denoted someone from the town of Hadria in northern Italy, which also gave its name to the Adriatic Sea. While Adrian is a perennial classic, Adren offers a more streamlined, modern sound for parents seeking a unique twist on a traditional root.
Less common today
Adren isn't in the latest US Top 1000. It last peaked at #5,519 in 2010.
US births per 5-year period, 1990βpresent (SSA data).