平将門
Taira no Masakado was a land-owning government official who led a massive insurrection against the Heian government and declared himself the "New Emperor" (新皇). He was later elevated to the status of a local kami out of a mixture of fear and reverence. He is an important figure in the shrine's history. After his defeat in 940 AD, he was decapitated by Fujiwara no Hidesato and his severed head was brought to the Shibasaki (Edo) area in a wooden bucket (首桶) and buried on a low hill near the shrine's location today. Locals who respected his defiance, and fearing his curse, enshrined him in Kanda Shrine, and his spirit is said to watch over the surrounding areas. It was rumored that when his shrine fell into disrepair, Masakado's angry spirit wrought natural disasters and plagues upon the nearby lands. It is also said that Tokugawa Ieyasu felt uncomfortable to have his castle built close to such a powerful spirit, and so decided to move Kanda Shrine to its modern location.