Jehoshaphat (High Priest)
According to Seder Olam Zuta, Jehoshaphat was a High Priest of Israel, succeeding Jehoiarib and succeeded by Jehoiada.
However, the historian Josephus does not mention a Jehoshaphat, and according to his account, the second High Priest after Joram was Pediah. Nor is a high priest named Jehoshaphat mentioned in the list of the Zadokite dynasty in or elsewhere in the Tanakh.