"Blend of Cae and Lynn"
The name Caelynn is commonly a female name from the "American" origin.
Caelynn is a modern American formation that joins Cae, a spelling of the name element Kay or Kaye, with the suffix Lynn. The same two elements appear in the related spellings Kaelyn, Kaelynn and Kaylynn. It has no recorded history before its first appearance in United States birth records in 1997.
The pronunciation of Caelynn is KAY-lin.