Rye clearing or courageous; combined with lake
Reilynn is a modern American invention, likely created by combining the surname-turned-first-name Riley with the popular suffix -lynn. Riley is derived from the Old English elements 'ryge' (rye) and 'leah' (wood, clearing, meadow), while Lynn is derived from the Welsh 'llyn' meaning lake.
US births per 5-year period, 1990–present (SSA data).