During recent excavations next to the Old City of Jerusalem, archaeologists discovered a unique seal impression (bulla) bearing the name of the 8th century BCE biblical King Hezekiah. The inscription reads: “Belonging to Hezekiah [son of] Ahaz, King of Judah.”
http://www.timesofisrael.com/seal-bearing-name-of-judean-king-found-in-jerusalem/