Etymology and distribution of 岡土.

Okado 【岡土】^{レベル1
Very rare}  The Japanese surnames etymology dictionary.

Tottori-ken , Shimane-ken . Tottori-ken Hino-gun Nichinan-chou Abhi is based. In the same place, tell the descendant of the former parent (Chosokabe · Moti Chika) who is the warrior of the Sengoku period · Azuchi-Momoyama period. Original parent has "parent". 長宗我部 Chousokabe reference.