Who is…
Nisroch

Hebrew: נִסְרֹךְ

There is some confusion about this name. It appears twice in Scripture. In both cases it refers to the same event—the assassination of the idolatrous Assyrian King Sennacherib who had 20 years earlier attempted to take Jerusalem.

Now it happened that as he was worshiping in the house of Nisroch his god, Adrammelech and Sharezer struck him down with the sword; and they escaped into the land of Ararat. And Esarhaddon his son became king in his place. —2 Kings 19:37 LSB; Isaiah 37:38

To date, archaeologists have not found an Assyrian idol named Nisroch. Some suggest that the temple’s name was Nisroch, not the god. Assyrian temples typically had special names to distinguish them. Theologian Albert Barnes suggested that perhaps the Hebrew text should be rendered “As he was worshipping his god in the house Nisroch.” This is the way the Jewish historian Josephus understood it.1

1. Albert Barnes, Barnes' Notes on the Bible