Jehosheba (יְהוֹשַׁבְעַת) means "YHWH is an oath" in Hebrew. In 2 Kings 11, Jehosheba was the daughter of King Jehoram of Judah and the wife of the high priest Jehoiada — **she rescued the infant Joash from his grandmother Athaliah's massacre of the royal family**, hiding him in the Temple for six years.
The Davidic dynasty survived because of her courage.
Jehosheba reduces to six — the number of biblical princess.