Strong, virtuous, or hill
Braelyn is a modern American invention, likely created by combining the popular 'Brae' prefix with the 'lyn' suffix. It is often associated with the Welsh word 'bre' meaning hill, or as a variation of the name Brianna, which implies strength and nobility.
Less common today
Braelyn isn't in the latest US Top 1000. It last peaked at #427 in 2011.
US births per 5-year period, 1990βpresent (SSA data).