"Blend of Sher and Lynn"
The name Sherlynn is commonly a female name from the "American" origin.
Sherlynn is a modern American formation that attaches the -lynn ending, frequent in twentieth-century girls' names, to a Sher- element of the kind found in Sherry, Sheryl and Shirley. It is not an established name in an older language tradition, and no inherited meaning is recorded for it. The first US birth record for the spelling dates from 1945, within the period when -lynn forms were being widely coined.
The pronunciation of Sherlynn is SHUR-lin.