According to a historical document in Senso-ji Temple, Tenkai and Chugo, a chief priest of Senso-ji Temple, were at the camp of Ieyasu during an attack on Hojo.
浅草寺の史料によれば、北条攻めの際、天海は浅草寺の住職忠豪とともに家康の陣幕にいたとする。