Etymology and distribution of 光月.

Kougetsu 【光月】^{レベル3
About 60}  The Japanese surnames etymology dictionary.

Saitama-ken , Tochigi-ken , Ibaraki-ken .

① Saitama-ken Minamisaitama-gun Miyashiro-machi It was in the Edo era in the hundred years. Ibaraki-ken Shimotsuma-shi It was in the Azuchi-Momoyama period as a vassal of Mr. Taga Tani who was the castle owner of Shimozuma Castle in Honjo-cho. Tochigi-ken Mooka-shi Kamigaya (Saginoya) · Shimokoriya was a place name with a record since the Edo period. Tochigi-ken Utsunomiya-shi Saginoya (Saginoya) The town was a place name with a record in the notation of "Sagitani" in the Edo period.

② Wakayama-ken Kaiso-gun Kimino-chou Originated from Shimokitani, Kagamiya (Sagitani) of Shiba's small figure.

Koudzuki 【光月】^{レベル3
About 60}  The Japanese surnames etymology dictionary.

Shiga-ken . A variant of 佐々木 . 佐々木 Sasaki reference.