Lord of Steel Heart aka 鉄火大名 is a film from Japan, released in 1961, starring Utaemon Ichikawa, Jūshirō Konoe, Sentarō Fushimi, Kensaku Hara, Hiroki Matsukata, Isao Yamagata, Keiko Okawa, Shingo Yamashiro, Shunji Sakai, Kenji Susukida and directed by Kokichi Uchide.
Plot: A Tokugawa Daimyo rebels against an his lord after the battle of Sekigahara. Samurai Matabei, a famous spear fighter and warrior, is a vassal of lord Honjo. One of Honjo’s most trusted under-lords is Sanzaemon. He has designs on Matabei’s fief, and he plots to kill Matabei. He finally convinces Lord Honjo of Matabei’s guilt. Now Matabei must fight to survive.