, also romanized as "Inou", was born in Kujyukuri, Chiba. His real name was Jinbo Sanjiro. He was a Japanese surveyor and mapmaker. He was the first person who made an accurate map of Japan. He started his travel through Japan in 1800. He walked together with his group about 44,000 km to create a map of Japan. When he died in 1818, Takahashi Kageyasu took over and finished the map in 1821.