Etymology and distribution of 関坂.

Sekisaka 【関坂】^{レベル3
About 140}  The Japanese surnames etymology dictionary.

Hiroshima-ken Onomichi-shi · Chiba-ken . Tell Hiroshima-ken Onomichi-shi that the priest who came from Shina in the Edo era used "Yuyama" from the doctor's mountain where there was a temple opened with a real name "thousand". The location of the temple is unknown. Medicine Mountain is a mountain name in estimation. The name of the country of the Chinese of the Edo period is Ming / Qing. There is also a story that it was pronounced as thuuzan in the Edo period. Hiroshima-ken Onomichi-shi Distributed in Kinashimayama Kinnozoncho. 千 Sen reference.