Braelynn Is A Girl’s Name Of American Origin. It May Be Related To The Welsh Name Briallen, Deriving From briallu, The Welsh Word For “primrose.” However, It Is Most Likely An Invented Name Inspired By Similar Names Such As Raelynn And Jaylin. Variants Of Braelynn Include Braylyn And Braelyn, So You’ll Have Lots Of Spelling Options To Choose From For Baby.