Jadon is a Hebrew name meaning "thankful" (according to Strong's Concordance) or "he will judge". It appears in the Hebrew Bible or Old Testament as the name of Jadon the Meronothite, one of the builders of the wall of Jerusalem in the Book of Nehemiah (Nehemiah 3:7).
The prophet Jadon
According to Flavius Josephus, Jadon is the name of a minor prophet in his Antiquities of the Jews VIII,8,5. In the Hebrew Bible it is referred to as the man of God (1 Kings 13:1). In the Lives of the Prophets he is called Joad. A Rabbinic tradition identifies him with Iddo.
Pushtun Jadun Tribe
As per ancient people and Pushtun history they are descendant of Bani Israel major evidences are present here too. One of the major Clan of Pushtun tribe "Jadoon/Gadun/Jadun is named after this Prophet. Jadoons dewelling are very much similar to Jews.