Etymology and distribution of 関羽.

Sekiba 【関羽】^{レベル1
Very rare}  The Japanese surnames etymology dictionary.

Kyouto-fu Uji-shi . Personal name . Kyouto-fu Uji-shi Uji-shi In Uji-shi Uji-shi Mr. Furukawa who was a vassal of Genjiro who is a warrior of the Heian period wrote in 1160 (the first year of elongation) and tells that he called "Taejoh Ryugaku Masakuni" . 古川 Furukawa reference.