"Blend of Jess and Lynn"
The name Jesslynn is commonly a female name.
Jesslynn is a modern American formation that reads as a blend of Jess, the short form familiar from Jessica, and Lynn, a name element that became a common second element in American girls' names from the twentieth century onward. Its first appearance in United States birth records in 1988 fits a coined or blended name rather than an inherited one. Spelling variants ending in -lynn, -lyn and -linn are common in the same period, so the exact spelling does not carry a separate meaning.
The pronunciation of Jesslynn is JESS-lin.