Duke de Valencia de Campos

• Infant Juan of Portugal (1349-1397), 1st Duke of Valencia de Campos .

1. Wife - Maria Telles de Menezes , daughter of Martin Alfonso Telo de Menezes and Aldonza Anes de Vasconcelos, sister of the Queen of Portugal, Leonor Telles de Menezes , wife of King of Portugal Fernando I. In 1379, she was killed by her husband, Juan.
2. Wife - Constance Enriques de Castile, illegitimate daughter of the King of Castile Enrique II and Seniors de Alba de Tormes . He was succeeded by his daughter from his second marriage:

• Maria de Portugal (1381 -?), 2nd Duchess of de Valencia de Campos .

1. Spouse - Martine Vazquez de Akunya (1357-1417), 1st Earl de Valencia de Don Juan . The count's title was inherited by their eldest son:

• Pedro de Acuna and Portugal (? - 1456), 2nd Earl of Valencia de Don Juan .

1. Spouse - Leonor de Quinones, the second daughter of Senor de Luna and Maria de Toledo
2. Wife - Juan de Zuniga. He was succeeded by his eldest son from his first marriage:

• Juan de Acuna and Portugal (c. 1420-1475), 3rd Duke de Valencia-Campos and 3rd Count de Valencia de Don Juan .

In 1465, the King of Castile Enrique IV restored the ducal title for Juan de Acuña and Portugal, 3rd Earl de Valencia de Don Juan (great-grandson of the Infant Juan of Portugal). During the War of the Castilian Succession, Juan de Acuna and Portugal were on the side of Juana Beltraneja , daughter of King Enrique IV , against the latter's sister, the Infanta Isabella . In 1475, the castle of Valencia de Don Juan was besieged and captured by supporters of Isabella the Catholic. During the assault on the castle, don Juan de Acuna and Portugal died. After his death, the ducal title ceased to exist.

• Count de Valencia de Don Juan

• Elenco de Grandezas y Títulos Nobiliarios españoles. Instituto "Salazar y Castro", CSIC