The Japanese surnames etymology dictionary.
① Topography . From paulownia and mountains. 切山 In Gifu-ken Yamagata-shi Ohara it is said that it was called from 987 to 989 (Years of year). Hyougo-ken Sasayama-shi In Otou tells the descendant of Mr. Kiriyama who came from Nara-ken Nara-shi . Estimated from tradition is the late Heian era and early Kamakura period.
④ Aichi-ken Nukata-gun Kouta-chou Birth of Kiriyama. Place name with a record in "Wakayama" notation during the Warring States Period. There are also stories saying that the place name depends on what Mr. Kiriyama developed.