Etymology and distribution of 歌井.

Utai 【歌井】^{レベル3
About 50}  The Japanese surnames etymology dictionary.

Kagoshima-ken Ooshima-gun Kikai-chou . Creation . "Many" was added to Sakae which is the surname of the Kamoshima-ken Amami archipelago. Estimated at the time of returning to Japan in 1953. 栄 Sakae reference.