Etymology and distribution of 古鞘.

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

Shimane-ken Yasugi-shi , Tottori-ken . Personal name . Shimane-ken Yasugi-shi Shimane-ken Yasugi-shi In Kamocho told Kamo Shrine in Yasugi Town from the name of Mr. Fujiwara Megumi who recommended in 778 (9th year of Houku). In Shimane-ken Yasugi-shi there is also a story from Kyouto-fu Kyouto-shi that he came from 901 to 923 (Year of the End of Year). 藤原 Fujiwara reference.