In 1336, Pedro, heir to the Portuguese crown, marries Constanza Manuel de Villena, a Castilian noblewoman, for political reasons; but the impulsive prince ends up giving in to his love for Inés de Castro, his wife's lady-in-waiting.

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Main Cast: Alicia Palacios, António Vilar, María Dolores Pradera, Gregorio Beorlegui, Raul de Carvalho, Antonia Plana, Ramón Martori, Antonio Casas, João Villaret, Alfredo Ruas

Directors: José Leitão de Barros, Manuel Augusto García Viñolas

Writers: Manuel Augusto García Viñolas, José Leitão de Barros

Editors: Jacques Saint-Léonard, Juan J. Doria

Cinematographer: Heinrich Gärtner

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