Combination of Demetrius and Marius
Demaryius is a modern American invention, likely created by blending the Greek name Demetrius (follower of Demeter) with the Latin name Marius (related to Mars or the sea). It gained visibility in the early 21st century primarily through professional sports.
Less common today
Demaryius isn't in the latest US Top 1000. It last peaked at #5,482 in 2014.
US births per 5-year period, 1990βpresent (SSA data).
NFL Pro Bowl wide receiver