Etymology and distribution of 世故.

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

Toukyou-to , Hokkaidou , Fukushima-ken Iwase-gun Ten'ei-mura . Last name including "rope", 藤原 surname. Fukushima - ken Iwase - gun Ten 'ei - mura Tell him that he was engaged in agriculture in Osato. Estimated in the Edo period. 藤原 Fujiwara reference.