Omori's descendants had become the lord of Seri-jo Castle generation by generation; however they were defeated by the Hiraoka clan in Ebara, and built the shrine on February 18, 1480 when the castle fell.
大森の子孫代々千里城主たりしが、荏原の平岡氏に攻められ、文明十一年十二月二十九日落城の時此神社を創建すと云ふ。