Etymology and distribution of 大冢.

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

Chiba-ken Sousa-shi . Creation . From the demon king. Chiba-ken Sousa-shi In the Yamaga period, it is a warlord of the Heian period who has been defeated by the war of the Heiji era in April 1160 (December of Heiji first year to March of the first year of Epoch) from the month of 1160 Tell the descendant of Kitano Shiroyemon who was a vassal of Genjiya. There is also a story saying that there was a child of Kisaburo, Nanzaburo at Kitonrou Onimono.