Brown Driver Briggs

 Joash = "given by the Lord"
1. son of king Ahaziah and the 8th king of Judah
2. son of king Jehoahaz and the 12th king of the northern kingdom of
Israel
3. father of Gideon
4. a son of king Ahab
5. a descendant of Shelah the son of Judah; either the son of Shelah
or the son of Jokim
6. son of Shemaah of Gibeah who resorted to David at Ziklag