God beholds or wealth; lake
A modern American blend combining the Hebrew name Jessie, meaning 'God beholds' or 'wealth', with the popular suffix -lyn, which is derived from the Welsh word for 'lake'. It represents a contemporary trend of creating melodic, multi-syllabic names by joining traditional roots with soft endings.
Less common today
Jessilyn isn't in the latest US Top 1000. It last peaked at #4,003 in 1991.
US births per 5-year period, 1990βpresent (SSA data).