"Blend of Jer- and Marcus"
The name Jermarcus is commonly a male name from the "American" origin.
Jermarcus joins the name Marcus with a Jer- prefix, the element that opens names such as Jerome, Jeremy and Gerald. It first appears in United States birth records in 1980, which fits a modern blended formation rather than an inherited one.
The pronunciation of Jermarcus is jer-MAR-kus.