What does 1 Chronicles 3:1 mean?

Here are the sons of David who were born to him in Hebron: Amnon, whose mother was Ahinoam from Jezreel; Daniel, whose mother was Abigail from Carmel; 1 Chronicles 3:1 - Modern Text Bible

(This verse starts the genealogy of David's sons, naming the first two born in Hebron and their mothers, emphasizing David's multiple marriages and the significance of his family line.)