TSK · 2 Kings 24:8

The sons of Jehoiakim: Jeconiah his son, Zedekiah his son.

As I live, says Yahweh, though Coniah the son of Jehoiakim king of Judah were the signet on my right hand, yet would I pluck you there;

Yahweh showed me, and behold, two baskets of figs set before the temple of Yahweh, after that Nebuchadnezzar king of Babylon had carried away captive Jeconiah the son of Jehoiakim, king of Judah, and the princes of Judah, with the craftsmen and smiths, from Jerusalem, and had brought them to Babylon.

Josiah became the father of Jechoniah and his brothers, at the time of the exile to Babylon.