Early records show that the shrine was an emerging center of Yamato power, flavored with a military overtone. Archeological evidences shows that around the 4th century, Yamato kings and nobility constructed more and more palaces and buildings in the shrine's vicinity. Prior to this, the Yamato leaders identified with kami worshipped at Mount Miwa, but may have turned to Isonokami for its martial implications. Myths written in the Nihon Shoki clearly attempt to link the Yamato court to Isonokami shrine. According to the Nihon Shoki, Emperor Suinin's eldest son, Prince Inishiki ordered a thousand swords made and was placed in charge of Isonokami's treasures. He then founded the Mononobe clan, who patronized the shrine for many generations. Indeed, many of the state's iron weaponry were kept in the shrine's storehouses. When the Mononobe clan collapsed, it was reformed as the Isonokami clan.