"Yeddo" is another way of writing "Edo", the old name of Tokyo.
Looking at the 1871 census, I believe everyone is listed with the family-name first format, which is why they seem to be grouped by people with the same first name. Kondo (Kondou) is a family name. ~gawa (Original name might be Ogawa or Onagawa?) is a common suffix on surnames.
On the other hand, "~kichi" is common in male given names. So "Kondo Torra Kitchi" and "Ongawa Torra Kitchi" are likely to be actually two men with the given name Torakichi, not necessarily related. "Manna Kitchi" is possibly Mankichi (or Minokichi).
Was he ever in the US?
http://www.rootschat.com/links/0mbf/ ("Ogawa Torakichi" is mentioned here - they were in NY in 1886, about to head for Paris).
I may have found some small reference on a Japanese site - is it possible, from what you know of the family, that they were back in Japan around 1883-1885?