Itou 【伊藤】7 The Japanese surnames etymology dictionary.
Hyougo-ken , Oosaka-fu , Niigata-ken . Originated from Oosaka-fu Ibaraki-shi . A place name with a record since the Kamakura period. The place name was also written as "Ibaraki", "Ihara Tree", "Ihara Tree", "Spikes", "Jingu Spice Tree".