Another of the shrines I visited in Shakujii-koen in Tokyo's Nerima-ku.

The age and origins of this shrine are unclear, but in Edo Period topographies such as the Shishin Chimeiroku and the Shinpen-Musashi-Fudo-Kiko we are told that there was one or more shrines (the original text is vague) called Shakujin Jinja (石神の神社, lit. Shrine of the Stone God), and that the shintai of the shrine was a sword-shaped stone (石剣, sekken) dating from before the Age of the Gods.

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According to the shrine legend, a well was being drilled in ancient times when a stone sword about 66 cm in length and about 44 cm wide was uncovered. To commemorate this, a shrine was built and the stone sword enshrined as the shintai. A book published in 1900, Musekishu, 夢跡集 edited by Yamaguchi Toyama山口豊山, says that the stone sword was actually unearthed by a man from a family called Toyoda and that the family continues active until this day. Note that the third character in the shrine's name, 井 means well: it is unclear to me whether the place name derives from the shrine name or vice versa.

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In the prayer hall over a dozen large ema have been carefully preserved since the Meiji Era. Two of them are by Kamata Tokei, 鎌田東渓, a recognised master of the genre active in the Edo Period.

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The main shrine building dates to 1881 and the shrine office was rebuilt in 1971. In October 1980  an auxiliary shrine, Haruna Jinja, was absorbed into the main shrine.

The tree preservation notice here, dating to November 1987, is for a species of beech and is the 993rd such notice in Nerima-ku.