John Lightfoot on Matthew 1:11

[And Josias begat Jechonias.] The sons of Josias were these: the first-born, Jochanan; the second, Joachim; the third, Zedekiah; the fourth, Shallum, 1 Chronicles 3:15. Who this Shallum was, the Jerusalem Talmudists do dispute: "R. Jochanan saith, Jochanan and Jehoachaz were the same. And when it is written, Jochanan the first-born, it means this; that he was the first-born to the kingdom: that is, he first reigned. And R. Jochanan saith, Shallum and Zedekias are the same. And when it is written, Zedekias the third Shallum the fourth; he was the third in birth, but he reigned fourth." The same things are produced in the tract Sotah. But R. Kimchi much more correctly: "Shallum (saith he) is Jechonias, who had two names, and was reckoned for the son of Josias, when he was his grandchild" (or the son of his son); "For the sons of sons are reputed for sons." Compare Jeremiah 22:11 with 24; and the thing itself speaks it. And that which the Gemarists now quoted say, Zedekiah was also called Shallum, because in his days 'Shalmah,' 'an end was put to' the kingdom of the family of David: this also agrees very fitly to Jechonias, Jeremiah 22:28-30.