Shirota 【城田】5 The Japanese surnames etymology dictionary.
Chiba-ken , Kanagawa-ken , Ibaraki-ken . A variant of 竹貫 shoot. Chiba-ken Tougane-shi Shimoya is based. The place is the origin. Chiba-ken Mobara-shi Takashi is a location name with a record since the Northern and Morning era. It is distributed in the same place. Chiba-ken Chousei-gun Chounan-machi It was in Sakamoto during the Edo period. 竹貫 reference.