2 Kings 12:1
In the seventh year of Jehu Jehoash began to reign; and forty years reigned he in Jerusalem. And his mother's name was Zibiah of Beersheba.
Nave's Topical Index—AKJV

2 Chronicles 24:1
Joash was seven years old when he began to reign, and he reigned forty years in Jerusalem. His mother's name also was Zibiah of Beersheba.
Nave's Topical Index—AKJV