A clay seal with the name of Isaiah has been found on a dig in Jerusalem – just 10 feet from another clay seal of Hezekiah. Eilat Mazar speculates that it is a seal of the Biblical prophet Isaiah, a contemporary of Hezekiah and the seige of Jerusalem by the Assyrian king Sennacherib. See for example www.livescience.com/61836-ancient-seal-prophet-isaiah.html …
… According to the Bible an angel of the Lord destroyed the Assyrian army but Assyrian annals claim Hezekiah paid tribute – although the city was never taken. See also an article by Eilat Ma\zar in Biblical Archaeology Review (Feb 2018) https://members.bib-arch.org/biblical-archaeology-review/14/2/7 … and see also the link sent in by Jovan at www.biblicalarchaeology.org/daily/people-cultures-in-the-bible/people-in…
The image below is of the excavation – deep into Iron Age strata.