Kozure Ôkami: Shinikazeni mukau ubaguruma (1972)
Title: Kozure Ôkami: Shinikazeni mukau ubaguruma (aka Lightning Swords of Death, aka Lone Wolf and Cub: Baby Cart to Hades)
Studio: Toho (Original release), Columbia (US release)
Year: 1972
Director: Kenji Misumi
Starring: Tomisaburo Wakayama, Go Kato and Yuko Hamada
DVD (region 1) available here.