The Count of Marialva () was a Portuguese title of nobility created by a royal decree, issued in 1440, by King Afonso V of Portugal, and granted to Vasco Fernandes Coutinho (from a family descendency dating to the old Portuguese nobility), the third Marshal of Portugal.
List of counts Vasco Fernandes Coutinho (1385); Gonçalo Coutinho, 2nd Count of Marialva (1415); João Coutinho, 3rd Count of Marialva (1450); Francisco Coutinho, 4th Count of Marialva (1480), married to Beatriz de Meneses, 2nd Countess of Loulé; Guiomar Coutinho, 5th Countess of Marialva (1510), 3rd Countess of Loulé, who married Fernando, Duke of Guarda.
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