Ookisu 【大木須】2 The Japanese surnames etymology dictionary.
① One name last name of the Amami archipelago of Kagoshima-ken . Tell him that it was called from 1828 (11th year of Civil Administration).
② Kagoshima-ken Ooshima-gun Tatsugou-chou Origin (yanu) birth. A place name with a record since the Edo period. One letter surname of Amagi archipelago of Kagoshima-ken which used "ya" of the house. It is distributed in the same place.