Keisaku Ninomiya (1804-1862) was a medical doctor who studied Western medicine and pharmaceutics under the German doctor P. F. von Siebold in Nagasaki. Keisaku is the foster father and teacher of Ine Kusumoto, who was the first female practitioner to master Western medicine in Japan.
Discovered on 20-11-2001 in Kuma Kogen by Nakamura, A.