Kawatsuna 【川綱】2 The Japanese surnames etymology dictionary.
Nara-ken Ikoma-shi . Korean type . Originated in Shandong Jining City (Chu Fu) City, People's Republic of China. I used "Song" of Qufu. "Hara" comes from Changwon's "Hara" in Changwon City, Gyeongsangnam-do, Republic of Korea, which is a cornerstone of Korea. There is a record of naturalization on Fukui-ken Fukui-shi on December 26, 1987. The real name is a hole. 孔 reference.