The sons of Josiah: the firstborn Johanan, the second Jehoiakim, the third Zedekiah, the fourth Shallum.
Hebrew allows great latitude in kinship terms; Zedekiah is called son of Josiah here, but he is actually grandson, the brother of Jehoiachin. Shallum, the fourth son listed, does not appear as king in the histories, yet Jeremiah names a Shallum son of Josiah who reigned after his father; this is almost certainly Jehoahaz under another name.
AI summary
With Josiah the regular succession broke. His sons were pawns: Jehoahaz dethroned by Egypt, Jehoiakim set up by Pharaoh, Zedekiah by Nebuchadnezzar. They were mere vassals of foreign powers, and the independent kingship of David truly ended at Josiah's death.
AI summary
Commenting on 1 Chronicles 3:10-16
The crown passed in direct line from father to son for seventeen descents, a rare thing, and the fruit of David's piety. But when the succession grew tangled near the captivity, brother to brother and nephew to uncle, the glory of that house began to eclipse, and the descendants after the return were mostly obscure names. Only Zerubbabel shone among them.
AI summary
Commenting on 1 Chronicles 3:10-24