"Blend of Harley and Lynn"
The name Harlynn is commonly a female name from the "English" origin.
Harlynn is a modern American blend of the name Harley with the -lynn ending, a spelling element that also appears in names such as Kaylynn and Raelynn. It first appears in United States birth records in 2006, which fits a recent coinage rather than a name inherited from an earlier language tradition.
The pronunciation of Harlynn is HAR-lin.