Etymology and distribution of 二ツ亀.

Futatsugame 【二ツ亀】^{レベル2
About 20}  The Japanese surnames etymology dictionary.

Chiba-ken . In Chiba-ken Isumi-shi , the vassal of the castle owner of Mashiki Castle who was in the Chiba-ken Isumi-shi Manchuria returned home and tells that it was also described as "Yumikida" and "Bowaira". Estimated in the Azuchi Momoyama period. 弓木田 Yumikida reference. 弓気田 Yugeta reference.