2 Chronicles 22:2

Forty and two years old. a son of forty-two years: i.e. of the house of Omri, on account of his connection with it through his mother (832-790. 42). In 2 Kings 8:26 Ahaziah's actual age (twenty-two years) is given when he began to reign (790) during the two years of his father's disease. His father, Jehoram, was thirty-two when he began to reign with Jehoshaphat, two years before the latter's death (2 Kings 8:16). This was in 796. Jehoram therefore was born in 828. Ahaziah, his son, being twenty-two when he began his co-regency, was therefore born in 812; his father being sixteen years old. See App-50. pp 2Ch 57:58.

daughter of Omri. Daughter put by Figure of speech Synecdoche (of Genus) for granddaughter. See App-55.