Albert Barnes Commentary 2 Samuel 14:27

"And unto Absalom there were born three sons, and one daughter, whose name was Tamar: she was a woman of a fair countenance." — 2 Samuel 14:27 (ASV)

Three sons - These probably died in infancy (see the marginal reference). From Tamar must have been born Maachah, the mother of Abijah, and the favorite wife of Rehoboam (1 Kings 15:2; 2 Chronicles 11:20–22).