Etymology and distribution of 川夏.

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

Nagasaki-ken Oomura-shi . There is a 下松 surname. In the Nagasaki-ken Oomura-shi during the Edo period, Nagasaki-ken Oomura-shi was the Tokyo priest of the shrine of the Fujimatsu Shrine in Mikachi Town. 下松 Shimomatsu reference.