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Saga of William Marshal (1147-1219), who became a knight, fought in tournaments and wars, traveled to the Holy Land, negotiated and witnessed the Magna Carta, and served as Regent of England when Henry III was crowned king at the age of nine.

How to Watch The Greatest Knight: William Marshal Legally and Safely

If you want to stream The Greatest Knight: William Marshal through reputable and legal services, there are a few good options depending on where you are. Subscription platforms like HBO Max, Disney+, Netflix, Amazon Prime Video, and Apple TV+ sometimes carry The Greatest Knight: William Marshal films or related DC titles—though availability depends on your country.

If you’d rather not commit to a subscription, there are ad‑supported, free (but legal) platforms such as Tubi, Pluto TV, Peacock or Crackle (where available in your region) that occasionally host superhero films.

Lastly, don’t forget about library‑linked streaming options like Kanopy or Hoopla (if your library or university is registered), and official uploads by film distributors on YouTube—these can also give you legal access to classic movies.