Etymology and distribution of 志学.

Shigaku 【志学】^{レベル2
About 10}  The Japanese surnames etymology dictionary.

Niigata-ken , Fukushima-ken , Toukyou-to .

① Shimane-ken Izumo-shi Origin of Sada in Sada Town. A place name with a record since the Nara period. The shrine of Susa shrine in the same place tells that it is the descendant of Susa Yukio 's life of Japanese mythology.

② Wakayama-ken Arida-shi Originated from the vicinity of Sousa Shrine (formerly Susa) in Senda. A place name with a record since the Nara period.

③ In Fukushima - ken Aidzuwakamatsu - shi tell her that she came from Nagano - ken in 1467 to 1487 (year of civilization) and renamed from Suwa surname in 1542 (Astronomical 11 years). 諏訪 Suwa reference.