Rehoboam loved Maacah the daughter of Absalom above all his wives and concubines (he took eighteen wives and sixty concubines, and fathered twenty-eight sons and sixty daughters).
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 he dealt wisely,.... Acted a prudent part, in order to execute his scheme, and particularly by disposing of his other sons in different parts of his kingdom, as follows: or "he made him his son Abijah to understand" (e); he taught and instructed him in the art of government, took a particular care of his education, that he might be fitted for it; and...
he took eighteen wives, and threescore concubines--This royal harem, though far smaller than his father's, was equally in violation of the law, which forbade a king to "multiply wives unto himself" [Deu 17:17].