Etymology and distribution of 蛭可.

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

Oosaka-fu . Terrain . A variant of 森迫 . In Oosaka-fu tells that Nara-ken Gojou-shi changed name from Moriwaki surname in around 1882 at Nishiyoshino cho. 森脇 Moriwaki reference.