Tokugawa Iemitsu
Tokugawa Mitsutomo was the eldest son of the first daimyō of Owari Domain, Tokugawa Yoshinao by a concubine. He undertook his "genpuku" ceremony under Shōgun Tokugawa Iemitsu on May 3, 1630, and was given the adult name of the "Mitsuyoshi", which included the same "kanji" "Mitsu" as the Shōgun. As a further sign of favor, his official wife, Chiyohime later Reisen-in, was also the daughter of "shōgun" Tokugawa Iemitsu. His childhood name was Gorōta (五郎太).