- Other Names: 孝秩 (Kôchitsu)
- Japanese: 片山 北海 (Katayama Hokkai)
Originally from what is today Niigata prefecture, Hokkai studied for a time in Kyoto, and then moved to Osaka. There, he formed a poetry circle together with Rai Shunsui (a Confucian scholar from Hiroshima) and a number of others.
- Chôsen tsûshinshi to Okayama, Okayama Prefectural Museum (2007), 69.