2 Kings 22:1
Josiah was eight years old when he began to reign, and he reigned thirty and one years in Jerusalem. And his mother's name was Jedidah, the daughter of Adaiah of Boscath.
Nave's Topical Index—AKJV

2 Kings 23:1
And the king sent, and they gathered to him all the elders of Judah and of Jerusalem.
Nave's Topical Index—AKJV

2 Chronicles 34:3-7,29-33
For in the eighth year of his reign, while he was yet young, he began to seek after the God of David his father: and in the twelfth year he began to purge Judah and Jerusalem from the high places, and the groves, and the carved images, and the molten images.
Nave's Topical Index—AKJV