As far as we can judge on descriptions in the diaries (he even created waka poems, although we cannot say they were good), he was certain to have enough education for reading and writing, (and he learned reading and writing from his maternal grandfather, Shirobei BEPPU).
日記中の記述（上手とは言えないが、和歌さえつくっている）を見る限り、読み書きに充分な教養があったことは確かである（読み書きは主に外祖父別府四郎兵衛から教わった）。