Island meadow or rye pool
Rylinn is a modern American invention, likely created by blending the traditional surname-name Riley with the popular 'lynn' suffix. While it lacks a singular ancient root, it draws its meaning from the Old English elements 'ryge' (rye) and 'leah' (clearing) or the Irish 'raghallach' (valiant).
Less common today
Rylinn isn't in the latest US Top 1000. It last peaked at #3,405 in 2010.
US births per 5-year period, 1990βpresent (SSA data).