dˈʊɹɹɪŋ ðɪ ˈiːdoʊ pˈiəɹɪəd, pˈoːɹʃənz ʌv wʌt lˈeɪɾɚ bɪkˌeɪm ðə sˈɪɾi ʌv neɪmɡˈɑːɾə wɜːɹ ˌʌndɚ ðə kəntɹˈoʊl ʌv ɐsˈoʊ dəmˈeɪn, ɐ fjˈuːdəl dəmˈeɪn ˌʌndɚ ðə tˌoʊkjuːɡˈɑːwə ʃˈɑːɡənˌeɪt.
During the Edo period, portions of what later became the city of Namegata were under the control of Asō Domain, a feudal domain under the Tokugawa shogunate.