Koshi (越) was a very old province of Japan [1] in the area of Niigata, Fukui and Toyama prefectures on the island of Honshū.
Koshi was also a regional name.[2] It was in what is now known as the Hokuriku region.
- ↑ Satow, Ernest. (1874). "The Geography of Japan," Transactions of the Asiatic Society of Japan, Vol. 1-2, p. 35.
- ↑ Nussbaum, Louis-Frédéric. (2005). "Koshi" in Japan Encyclopedia, p. 563.