Background
Tensan Arakawa was born in 1654.
Tensan Arakawa was born in 1654.
He studied under Jinsai when he was young.
In 1669, he served the Kii Clan (Wakayama Prefecture). He often disagreed with him on academic issues. Spent his spare time in the study of the topography of Kii and investigated sites for building fortresses.