He is recorded as the father of Johanan and Jonathan, who belonged to the tribe of Judah and were military commanders at the time of Jerusalem's destruction.
2 Kings 25:23When all the commanders of the forces and their men heard that the king of Babylon had appointed Gedaliah as governor, they came to Gedaliah at Mizpah—Ishmael son of Nethaniah, Johanan son of Kareah, Seraiah son of Tanhumeth the Netophathite, and Jaazaniah son of the Maacathite, and their men.
Jeremiah 40:8they came to Gedaliah at Mizpah—Ishmael son of Nethaniah, Johanan and Jonathan the sons of Kareah, Seraiah son of Tanhumeth, the sons of Ephai the Netophathite, and Jezaniah son of the Maacathite, and their men.