Jehu's father was not the roughly contemporaneous King Jehoshaphat of Judah, whose own father was King Asa of Judah. "Generally Jehu is described as the son only of Nimshi, possibly because Nimshi was more prominent or to avoid confusing him with the King of Judah (R’Wolf)". Scherman, Nosson, ed., "I–II Kings", The Prophets, 297, 2006. See (2 Kings 9:2)