In the colophon of "Wsansho," it is written that "Shigeyoshi MORI moved from Kawarabayashi, Mukonokori, Settsu Province to Kyoto, and established the school under the name of 'the Master of Division'" (the sign said this is the school of Master of Division).
『割算書』の奥付には、「摂津国武庫郡瓦林から京都へ移り住み、“割算の天下一”という名（割算天下一指南の看板）の下に塾を開いた」と書かれている。