After her, he married Maacah daughter of Absalom, and she bore to him Abijah, Attai, Ziza, and Shelomith.
See here, I. How Rehoboam was strengthened by the accession of the priests and Levites, and all the devout and pious Israelites, to him, even all that were true to their God and their religion. 1. Jeroboam cast them off, that is, he set up such a way of worship as he knew they could not in conscience comply with, which obliged them to withdraw...
Commenting on 2 Chronicles 11:13-23
And Rehoboam made Abijah the son of Maacah the chief,.... The chief of all his sons, head over them, being the son of his most beloved wife, and her firstborn however, and perhaps might be of a greater capacity than the rest of his children: to be ruler among his brethren; or over them; gave him greater authority, and intrusted him with more power, set...
after her he took Maachah . . . daughter--that is, granddaughter (Sa2 14:27) of Absalom, Tamar being, according to JOSEPHUS, her mother. (Compare Sa2 18:18).