(There is a theory that they were joined by Hoshu KATSURAGAWA, but it should be more natural to understand he did not attend there, judging from descriptions of "Rangaku Kotohajime" [The Beginning of Dutch Studies] written by Genpaku SUGITA at a later stage).
(なお、この場に桂川甫周がいたとする説もあるが、『蘭学事始』の記述からは、いなかったと考えるのが自然である）。