Kōsaka Shinkaku

Kōsaka Shinkaku was the sixth head of the Kōsaka clan, a warrior family of Shinano Province, and held Maki Castle in the Sarashina district. In 1336 he took up arms at Maki with the Hōjō remnants for the Southern Court, alongside an Uesugi force from Echigo.

That year, in the first and sixth months, he fought bitter battles against the Northern Court clans of northern Shinano. In the first month Murakami Nobusada took Kiyotaki Castle and then attacked Shinkaku at Maki.