Zephaniah 1:1 The word of the Lord which came to Zephaniah the son of Cushi, the son of Gedaliah, the son of Amariah, the son of Hezekiah, in the days of Josiah the son of Amon, king of Judah.
Zephaniah was called to be a prophet during the reign of Judah’s last godly king, Josiah. His family lineage is traced back to his great grandfather, Hezekiah. This may indicate that Zephaniah descended from the royal bloodline in Judah. Since it is not expressly stated, we do not know. Furthermore, since this Hezekiah is not referred to as King Hezekiah, it seems less likely that this is in fact the case.