Saiga 【斎賀】4 The Japanese surnames etymology dictionary.
Kagoshima-ken . Terrain . From the salt gate facing the gate division system that was in the Edo period. An example of the location of the gate. Kagoshima-ken Satsumasendai-shi Budo- machi, poor country , Kagoshima-ken Satsuma-gun Satsuma-chou Nakatsugawa. The gate name is from across the salt.