2 Kings 24:17-18

ASV(i) 17 And the king of Babylon made Mattaniah, [Jehoiachin's] father's brother, king is his stead, and changed his name to Zedekiah.
18 Zedekiah was twenty and one years old when he began to reign; and he reigned eleven years in Jerusalem: and his mother's name was Hamutal the daughter of Jeremiah of Libnah.