Gracious; lake
A modern American invention, Jesilyn likely combines the Hebrew name Jessica or Jesse with the popular suffix -lyn. It blends the traditional meaning of 'God is gracious' or 'wealthy' with the Welsh-derived 'lyn', often associated with a lake or pool.
Less common today
Jesilyn isn't in the latest US Top 1000. It last peaked at #10,034 in 2003.
US births per 5-year period, 1990βpresent (SSA data).