Etymology and distribution of 上生.

Ueo 【上生】^{レベル2
About 20}  The Japanese surnames etymology dictionary.

Mie-ken Tsu-shi , Nara-ken . Originated from Nara-ken Uda-shi . Place name with a record since the Kofun period. The place name was also written as "Uda," "Uyu", "Uta", "Utada", "Usu", and "Putian".