Leaving aside the antiquity of the name, there are several words that are not even human names.
-Aguri is the name of a racehorse.
-ChuichiDaisetsu is two names joined without spaces. Japanese do not have names that are capitalized except at the beginning, such as deGrom.
-Fomio is either a typo or an OCR misidentification of Fumio. A Google search makes the name appear to be real. However, "fo" does not exist in common Japanese names. Fumio is a typical name, for example, the current prime minister.
-Fujii, Yamada etc. are typical family names, but not first names.
-Muneyaki seems to be the name of a sword making process. I don't know much about it.
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