What does 1 Chronicles 4:18 mean?

Mered also had children with his Judean wife: Jered, who started Gedor; Heber, who started Soco; and Jekuthiel, who started Zanoah. These are the children of Bithiah, Pharaoh’s daughter, whom Mered married. 1 Chronicles 4:18 - Modern Text Bible

(This verse continues the family tree, emphasizing the towns founded by Mered’s children and the significance of his marriage to Pharaoh’s daughter.)