| There is also another story which says that in 1862 when Takamori SAIGO was exiled to Okinoerabu-jima Island and was locked in jail of Wadomari-cho, Kawaguchi went to the island to teach calligraphy and poetry to Saigo, although he was not a criminal (according to Yasutsugu SHIGENO's idea). |
さらに、文久2年（1862年）に西郷隆盛も同じ島に流されて和泊町の牢に入れられたときに、川口は罪人ではないけれども、わざわざ沖ノ永良部へ往って西郷の書や詩作の指導をしたとする説もある（重野安繹による）。 |