He told the chief retainer of the Takato Domain, Kikuso OKAMURA that his real name was Katsuzo INOUE and he was born in the Echigo-Nagaoka Domain, but it has not been determined because it was not mentioned in any document of the Nagaoka Domain.
「本名が井上克三であり、越後長岡藩出身である」ことを、高遠藩家老の岡村菊叟に告げているが、長岡藩の文書が現存していないため確定されていない。