It is now called Matsura Sōchinshu Kagami-jinja (松浦総鎮守鏡神社), and formerly known as the name of Kagami no mikoto Byōgū (鏡尊廟宮), Kagami-gū (鏡宮), Matsuura-gū (松浦宮), Itabitsu-sha (板櫃社) and Kuri Daimyōjin (久里大明神).

Kagami-jinja was the head shrine of Matsura County in the former Hizen Province and is classified historically as a "Sosha".

According to legend, Empress Jingū climbed atop of the Mount Kagami during the legendary military invasion of Korea in the 3rd century.

She recovered her illness, and it was said that she had given birth to the Emperor Ōjin in Umi now part of modern Fukuoka Prefecture.

The shrine was built in 750 by Kibi who was exiled to Dazaifu on the island of Kyushu, ten years after the execution of Hirotsugu.