Western meadow
A modern American invention combining the element 'Wes', derived from the Old English word for west, with the popular suffix 'lyn', meaning lake or meadow. It likely originated as a feminine variation of the masculine name Wesley.
Less common today
Weslyn isn't in the latest US Top 1000. It last peaked at #2,621 in 2017.
US births per 5-year period, 1990βpresent (SSA data).