"Blend of Emma and Lynn"
The name Emmalynn is commonly a female name from the "American" origin.
Emmalynn is a modern American formation that joins Emma with the -lynn ending found in other American girls' names such as Kaylynn and Adalynn. Emma is Germanic, from the root ermen, meaning whole or universal, and the Lynn element corresponds to the Welsh llyn, lake. The name first appears in US birth records in 1985, which fits this pattern rather than an older documented tradition.
The pronunciation of Emmalynn is EM-uh-lin.