Etymology and distribution of 世賀.

Sega 【世賀】^{レベル2
About 10}  The Japanese surnames etymology dictionary.

Miyagi-ken Sendai-shi , Toukyou-to . Terrain . From Tsutsu and the field. Miyagi-ken has 大槻 surname. 大槻 Ootsuki reference.

※ There was Masato Masato's surname during the Heian era. Location unknown. Hyougo-ken Kanzaki-gun Near the Fukusaki-chou (formerly: Tsuchida Township) is a place name with a record in the Heian era.