Etymology and distribution of 白主.

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

Tokushima-ken . Tokushima-ken Naka-gun Naka-chou Hiratani (Hydrangea) is a place name with a record since the Edo period. It is distributed in the same place. 源 Yes surname. 源 Minamoto reference.