The Japanese surnames etymology dictionary.
Oosaka-fu Habikino-shi , Oosaka-fu Sakai-shi Mibara-ku, Nagasaki-ken Oomura-shi . Oosaka-fu Kawachinagano-shi The birth of heavens. Place name with a record with "Osamu watashi" notation in the North-South morning era. Nagasaki-ken Oomura-shi It was the shrine of the Omura Shrine of Kushima in the Tokyo era.