Etymology and distribution of バガイ.

Bagai* 【バガイ】^{レベル1
Very rare}  The Japanese surnames etymology dictionary.

Hiroshima-ken Hiroshima-shi , Hiroshima-ken Higashihiroshima-shi . Terrain . A variant of 升迫 . Hiroshima-ken Higashihiroshima-shi Distributed in Saijocho Temple. Mr. 舛長 surname is present in the same 舛長 . 舛長 Masunaga reference.