Possibly a modern variation of Trevor or Travis
Trevious is a rare modern American invention, likely created by blending the traditional Welsh name Trevor with the suffix -ious to create a unique, rhythmic sound. It may also be influenced by the French-derived name Travis, which refers to a toll-collector or crossing.
Less common today
Trevious isn't in the latest US Top 1000. It last peaked at #4,232 in 1997.
US births per 5-year period, 1990βpresent (SSA data).