Combination of Chae and the suffix lyn
Chaelyn is a modern American invented name. It likely combines the phonetic element 'Chae' (often derived from names like Michaela or Charity) with the popular 'lyn' suffix, which is associated with lake or pool in Welsh roots.
Less common today
Chaelyn isn't in the latest US Top 1000. It last peaked at #12,639 in 2011.
US births per 5-year period, 1990βpresent (SSA data).