Etymology and distribution of 赤墳.

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

Kumamoto-ken · Oosaka-fu · Kyouto-fu . 赤本 There surname.

※ Topography . A variant of 赤兀 . In Hyougo-ken Koube-shi there was a case in which the name was changed from the red name to the similar Red Yuan family name. Estimated in around 1955. 赤禿 Akahage reference.