What does 2 Chronicles 11:18 mean?

Rehoboam married Mahalath, the daughter of Jerimoth (who was David's son) and Abihail (who was Eliab's daughter, Eliab being Jesse's son). 2 Chronicles 11:18 - Modern Text Bible

(Rehoboam is building alliances within his own extended family, marrying into the line of David and Jesse.)