Shimma is the King James Version spelling of Shimea, another name for Shammah, Jesse’s son, in 1 Chronicles 2:13.
See Shammah #2.
Bible dictionary
Shimma
Adapted by Mission Mutual (Aquifer Open Bible Dictionary) from Tyndale Open Bible Dictionary © 2023 Tyndale House Publishers. CC BY-SA 4.0. About the sources