Moriyama Einosuke
Moriyama Einosuke (森山 栄之助, July 10, 1820 - May 4, 1872) was a samurai during the Tokugawa Shogunate, and an interpreter of Dutch and English. He studied English under Ranald MacDonald, and as “Chief Dutch Interpreter” was one of the chief men involved in the negotiations with Commodore Perry in regard to the opening of Japan to the outside world.
Samuel Wells Williams, a member of Perry's second visit noted in 1854:
A new and superior interpreter came with Saborosuke, named Moriyama Yenosuke [...] He speaks English well enough to render any other interpreter unnecessary, and this will assist our intercourse greatly. He [...] asked if Ronald McDonald (sic) was well, or if we knew him. [...] giving us all a good impression of his education and breeding. (Williams, p.120, March 3rd 1854)[1][2][3]