Once you have located all the Kings in the grid, the remaining letters will spell out another ruler.

RHMNNDHJJE
JEAOAAEESE
EZHMDVSRUL
HETOAISOSA
OKOLBDABJH
AIJOAONOOA
SACSAMAASJ
HHAHSRMMII
HUARHIISAB
LBTHAIZAHA

ABIJAH
DAVID
JOSIAH
REHOBOAM
AHAB
ELAH
JOTHAM
SAUL
AHAZIAH
HEZEKIAH
MANASSEH
SOLOMON
ASA
JEHOASH
NADAB
BAASHA
JEROBOAM
OMRI

solution...