Dead - It appears from a comparison of this passage with 2 Chronicles (marginal reference) that Josiah was not actually killed in the battle.
Jehoahaz - Or Shallum (the marginal note). He may have taken the name of Jehoahaz (“the Lord possesses”) on his accession. He was not the eldest son of Josiah (see 2 Kings 23:36 note). The mention of “anointing” here favors the view that there was some irregularity in the succession (see 1 Kings 1:34 note).