Etymology and distribution of 須階.

Sugai 【須階】^{レベル2
About 40}  The Japanese surnames etymology dictionary.

Aomori-ken , Hokkaidou .

① Topography . From the hall and the mountains. Iwate-ken Ninohe-shi Komagoji Town Komagari Ridge (Vertical) is a place name unknown in the record era. It is distributed in the same place.

② Personal name . Aomori-ken Hirosaki-shi Shimogaro silver town was in the Edo period in the Hirosaki clan of the clan office. The same clan says that he changed his name from Hachinohe Odate mountain of Genji Jitsumi in 1587 (Tensho 15 years). 源 Minamoto reference.

※ Aomori-ken Hirakawa-shi Tateyama is a place name with a record since the Edo period.