From the Sengoku period (Japan's Warring States period) to the Azuchi-Momoyama period, Kiyonaga NAITO, Masashige NAITO, Ienaga NAITO, and Nobunari NAITO served Ieyasu TOKUGAWA, and worked so hard that the family was granted the right to establish several branch families, which flourished and provided hereditary daimyo to the Tokugawa House.
戦国時代(日本)から安土桃山時代にかけて、内藤清長・内藤正成・内藤家長・内藤信成らが徳川家康に仕え活躍し、その功績により江戸幕府の成立後は数家に分かれ譜代大名として隆盛した。