What does 1 Chronicles 12:3 mean?

Their leader was Ahiezer, with his brother Joash, both sons of Shemaah from Gibeah. Then there were Jeziel and Pelet, sons of Azmaveth, Beracah, Jehu from Anathoth, 1 Chronicles 12:3 - Modern Text Bible

(The list names the leaders and other key members, showing the importance of each individual.)