Black Arrow.

In 15th century England, a civil war called Wars of the Roses is being fought between two rival houses who want the throne. Fresh from battle, a knight finds his family dead. He joins the outlaws led by the Black Arrow (Stephan Chase) to seek justice. The noble Black Arrow foils Sir Brackley's (Oliver Reed) plan to kill one ward (Benedict Taylor) and marry the other. This is a classic story by Robert Louis Stevenson turned into film by Disney pictures.