Etymology and distribution of 杏山.

Kyouyama 【杏山】^{レベル1
Very rare}  The Japanese surnames etymology dictionary.

Gunma-ken Tatebayashi-shi · Nagano-ken · Toukyou-to . Terrain . Gunma-ken Tatebayashi-shi In the Edo era at the time of the Edo period, it was written as "Koshiji", "Koi", and tells that he used "fertilizer" by gaining fertilizer placement. There is also a tradition that it used "Yoshi" from the fact that Niigata - ken (formerly Echigo Country) comes out and said it was the name of the overland family. It is unknown whether love life exists. 越地 Koshiji reference.