"Blend of Ty and Lynn"
The name Tylynn is commonly a unisex name from the "American" origin.
Tylynn is a modern American formation that joins the element Ty, a short form of names such as Tyler, to the suffix -lynn. The -lynn ending became a productive element in American given names in the later twentieth century, as in Kaylynn and Raelynn, and Tylynn fits that pattern rather than any older naming tradition. No earlier use of the name in a documented language has been recorded.
The pronunciation of Tylynn is TY-lin.