The Japanese surnames etymology dictionary.
Oosaka-fu . There is a time in the name of a man. Oosaka-fu Izumi-shi The time name in the neighborhood of Ikedashita-cho (formerly Ikeda Township) is a place name with a record in the Kamakura period. Kyouto-fu Kameoka-shi The name of the time near Utsugane cho (formerly Tairya Namda) is the place name recorded in the Muromachi Period.