High, noble, or from the briar clearing
Brylei is a modern American invention, likely created by blending the Celtic-rooted 'Bry' (from Brian or Brianna) with the popular 'lee' suffix. It carries the connotations of nobility from its Celtic roots and the natural imagery of a meadow or clearing from its English components.
Less common today
Brylei isn't in the latest US Top 1000. It last peaked at #5,692 in 2009.
US births per 5-year period, 1990βpresent (SSA data).