This Bible contradiction is from the Skeptic's Annotated Bible.

Verses

He was Josiah's son.

Matthew 1:11 View context

And Josias begat Jechonias and his brethren, about the time they were carried away to Babylon:

He was Josiah's grandson.

1 Chronicles 3:15-16 View context

And the sons of Josiah [were], the firstborn Johanan, the second Jehoiakim, the third Zedekiah, the fourth Shallum.

And the sons of Jehoiakim: Jeconiah his son, Zedekiah his son.