2 Chronicles 22:11

11 Jehosheba, daughter of King Jehoram, took Ahaziah's son Joash, and kidnapped him from among the king's sons slated for slaughter. She hid him and his nurse in a private room away from Athaliah. So Jehosheba, daughter of King Jehoram and Ahaziah's sister - she was also the wife of Jehoiada the priest - saved Joash from the murderous Queen Athaliah.