Etymology and distribution of 瀬垣.

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

Ooita-ken Usuki-shi , Kanagawa-ken · Okinawa-ken Ishigaki-shi . Korean type . Originated in the city of Gyeongju (aka Tsukishiro (Walson)) in the Republic of Korea. From "Moon" of Moon Castle and "Star" of Seongju County, South Gyeongsangbukdo. There is a record of naturalization on Ooita-ken Tsukumi-shi February 6, 1970. The real name is Li. There is a record of naturalization on Yamaguchi-ken Shimonoseki-shi on September 30, 1960. The real name is Li. 李 Ri reference.