[3] The mansion is instead thought to have been located in an area near Inohana hill, around the present-day Chiba District Court.

[3] An analysis of the earthworks and moats have led to theories that it is in fact the remains of a castle from the Sengoku period.

[1] In the Muromachi period, conflict between the Ashikaga shogunate in Kyoto and Kantō kubō caused the Kanto region to be thrown into chaos.

[5] In 1858, the "Illustrated Guide to Famous Places of Narita", produced at the time of the construction of the new main hall of Narita-san temple, contains a section about Chiba Tsunetane.

In 1926, a monument commemorating the 800th anniversary of the founding of Chiba-fu was erected at the site of Inohana Castle, referencing Chiba Tsuneshige's rule of the area in the late Heian period.

The area around the shrine is said to be the site of an observation platform, which once offered a full view of the Tokyo Bay and the nearby Chiba Port.

There is a legend that Chiba Tsunetane made tea with water drawn from this well and presented it to Minamoto no Yoritomo.