Overview
Duel at the Rio Grande is a 1963 Italian/French/Spanish co-production film starring Sean Flynn. The film is loosely based on The Mark of Zorro. It was produced by Harry Joe Brown.
It is also known as Il Segno di Zorro (The Sign Of Zorro).
Plot
Ramon Martinez y Rayol, a half Basque/half Castilian caballero leaves his native Spain for Mexico at the request of his mother. She tells him that the father he was told was dead, is actually alive and living in Mexico and has asked for his son's help. When he arrives in Mexico he finds that his father has died under mysterious circumstances. Determining that his father has met with foul play, he uses "the sign of Zorro", to lead a campaign against a corrupt generalissimo. Along the way he wins the heart of a beautiful senorita.
Cast
From Wikipedia (CC BY-SA 4.0).