Wasayo Nakamoto was the daughter of Gosaku Nakamoto and ? Hatano (unknown first name of the mother).
Wasayo Nakamoto died in Ewa Oahu, Hawaii in 1936. Her husband Toyotaro Okamoto died in Ewa Oahu, Hawaii in 1904.
Several Okamotos can be found in Alae Cemetary in Hilo, Hawaii, some born just before or just after Toyotaro's death, at 29 years of age. They may be related.
Japanese records indicate a few Nakamotos born, married or buried in Hiroshima-ken around the same time as Wasayo's birth there, but only list them as Nakamoto with no given names.
I don't know if we are related, but I suspect that ALL Nakamotos are. There are very few Nakamotos recorded historically or world wide with the first historical mention of a Nakamoto being Kichizaemon Nakamoto, in the late 1600s and early 1700's, who went by several aliases in Osaka, including that of the Tominaga name, where he ran a shoyu and pickle factory, and was one of five individuals who converted a once private school for privileged aristocrats into a public school. One of his sons (the third) was Tominaga Nakamoto, the famous Japanese philosopher who was disowned by his father because his philosophy ran counter to what Kichizaemon Nakamoto's public school taught. This was a rather touchy subject at the time, given that the only way that the school was given the authority to operate was with the Shogun's approval, and what Tominaga Nakamoto was teaching was counter to prevailing beliefs supported by the Shogun. Kichizaemon's second son was Sadakata Nakamoto, who founded the Nakamoto (Sake) Brewing Company in 1727, which is still in operation today. The second and third sons were from Kichizaemon's second wife. His first son, from his first wife, continued with the Tominaga surname and inherited the family business.
I don't know how these families are connected, but I suspect that they and we, are all connected in some way.