And Rehoboam married Mahalath, who was the daughter of David’s son Jerimoth and of Abihail, the daughter of Jesse’s son Eliab.
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 after he took Maacah the daughter of Absalom,.... Thought by some to be Absalom the son of David, his father's brother, and his uncle, and so married his cousin; but Absalom seems to have had but one daughter, whose name was Tamar, Sa2 14:27, and the name of this man is different from his; he is called Abishalom, Kg1 15:2.
HIS WIVES AND CHILDREN. (Ch2 11:18-23) Rehoboam took Mahalath--The names of her father and mother are given. Jerimoth, the father, must have been the son of one of David's concubines (Ch1 3:9). Abihail was, of course, his cousin, previous to their marriage.