From Merged Shrines
As far as I am aware there is almost nothing in the publc domain about this shrine. What makes it interesting is the gatherings that were held here to pray to Jukuya Sama (十九夜様, lit. Goddess of the 19th night). She is a manifestation of Kannon Bosatsu. The 19th was decided on under the lunar calendar and the gatherings were often held every month. It seems that they lasted until the moon rose. The people attending the gathering were mostly local women praying for safe childbirth.
At the back of the shrine is a collecton of seven carvings of the associated Buddhist deities and the characters Jukuya can be deciphered on some of them.
(Click on images to expand them)