"Blend of Josie and Lynn"
The name Josilynn is commonly a female name from the "English" origin.
Josilynn is a modern blend of Josie, an English diminutive of Josephine or Jocelyn, and Lynn, a name long used as the second element in English-language girl names. It first appears in United States birth records in 1996.
The pronunciation of Josilynn is JOSS-uh-lin.