In the third year - If Hoshea ascended the throne toward the close of the 12th year of Ahaz 2 Kings 17:1, and if Ahaz reigned not much more than 15 years 2 Kings 16:2, the first of Hezekiah might synchronise in part with Hoshea’s third year.
Hezekiah - The name given by our translators follows the Greek form, Ἐζεκίας Ezekias, rather than the Hebrew, which is Hizkiah. Its meaning is “strength of Yahweh.”