God beholds or gift of God combined with lake
A modern American compound name blending the Hebrew-derived Jessica with the Welsh-derived Lynn. It suggests a meaning of divine observation or grace paired with the natural imagery of a pool or lake.
Less common today
Jesslynn isn't in the latest US Top 1000. It last peaked at #3,467 in 2014.
US births per 5-year period, 1990βpresent (SSA data).