Hirowatari Keisu (1833-1866) was a painter, Karae Mimetri, active in Nagasaki around the end of the Edo period. and Kobayashi. His name was Soshin, and his family name was Koyasu. His real name was Munenobu, and his Chinese characters were Zikyo. He was also known as Ginshuken. He studied painting under his uncle Araki Senshu and was later adopted. In 1848, he succeeded Hirowatari Daisuke and became a karae-meteri of the Nabeshima clan.
