The authors previously reported on a Dr. Todo Yoshimasu's visit to a feudal lord of Nambu domain in 1752. This paper describes the outcomes of our investigation on what happened after the visit based on the diary “Zassyo” written by a chief retainer of the domain. Despite Yoshimasu's treatment, the load was not cured and ended up passing away. At that time, there were three of Yoshimasu's pupils who were from Nambu and serving as medical doctors for the domain. A record in the diary indicates that, after the lord's death, all of them were either discharged or penalized with pay cut. It indicates that Yoshimasu's revolutionary medical philosophy and methodology were not fully understood nor appreciated back then.

According to the biography of Dr Todo Yoshimasu, he visited to Lord Nambu in 1752. However, this biography does not describe the detail of his therapeutic process. Recently we found out the historical materials, i.e. Zassho which is a diary written by a chief counselor of Morioka-­Nambu feudal domain. This diary describes the detail of Dr Todo Yoshimasu's medical activity to the Lord Nambu. This report intends to introduce the description of this diary and discuss concrete activities of Dr Todo Yoshimas. This report is a new significant excavation since when publication Todo­zenshu in 1917.