Etymology and distribution of トムセン.

Tomusen* 【トムセン】^{レベル1
Very rare}  The Japanese surnames etymology dictionary.

Kagoshima-ken Soo-shi .

① Kagoshima-ken Soo-shi Originated from Hirasawa Tsu in the Suminoicho Minami-Nogo miniature. Hirasawa Tsumon of the gate division system was in the Edo period in the same place.

② Topography . Miyazaki-ken Ebino-shi From Hirasawa Tsunemon of the gate division system which was in the Edo period in Harada. The gate name comes from Sawa and a passing place. There are cases where Hira means "sloping ground".