Question: Who is Beltrán De La Cueva, 3Rd Duke Of Alburquerque's paternal grandfather?

Knowledge 1: Beltrán de la Cueva, 3rd Duke of Alburquerque
Beltrán de la Cueva y Toledo, 3rd Duke of Alburquerque, (in full), (c. 1478 - 11 February 1560) was a Spanish nobleman and military leader.He was born in Cuéllar, the son of Don Francisco Fernández de la Cueva, 2nd Duke of Alburquerque and of Francisca de Toledo, daughter of García Álvarez de Toledo, 1st Duke of Alba.Beltrán de la Cueva was appointed captain general of the Spanish Army, and commander-in-chief of the English Army in France (under queen Mary I of England).He was named a Knight of the Order of the Golden Fleece in 1531, a Viceroy of Aragon in 1535, and a Viceroy of Navarre in 1552, position he held until his death in 1560. [SEP] Knowledge 2: Francisco Fernández de la Cueva, 2nd Duke of Alburquerque
Francisco Fernández de la Cueva, 2nd Duke of Alburquerque (in full)(25 August 1467 – 4 June 1526) was a Spanish nobleman.He was the son of Don Beltrán de la Cueva, 1st Duke of Alburquerque, by first wife Doña Mencía Hurtado de Mendoza y Luna.He served the Catholic Monarchs Isabella I of Castile and Ferdinand V of Castile in the Wars of Granada along with his father.He was the 644th Knight of the Order of the Golden Fleece.He married before January 1485 Dona Francisca Alvarez de Toledo, daughter of García Álvarez de Toledo, 1st Duke of Alba and sister of his first stepmother, and among two other sons and two other daughters he had the oldest daughter Dona Mencía de la Cueva y Alvarez de Toledo, who married as his second wife Don Pedro Fajardo y Chacón Manrique de Lara, 1st Marquess of los Vélez.He was the paternal grandfather of the 1st Marquess of Cuéllar in 1562, Don Francisco de la Cueva y Téllez-Girón, Alvarez de Toledo y de la Vega.
Knowledge 1: Beltrán de la Cueva, 3rd Duke of Alburquerque
Beltrán de la Cueva y Toledo, 3rd Duke of Alburquerque, (in full), (c. 1478 - 11 February 1560) was a Spanish nobleman and military leader.He was born in Cuéllar, the son of Don Francisco Fernández de la Cueva, 2nd Duke of Alburquerque and of Francisca de Toledo, daughter of García Álvarez de Toledo, 1st Duke of Alba.Beltrán de la Cueva was appointed captain general of the Spanish Army, and commander-in-chief of the English Army in France (under queen Mary I of England).He was named a Knight of the Order of the Golden Fleece in 1531, a Viceroy of Aragon in 1535, and a Viceroy of Navarre in 1552, position he held until his death in 1560. [SEP] Knowledge 2: Francisco Fernández de la Cueva, 7th Duke of Alburquerque
Francisco Fernández de la Cueva y de la Cueva, 7th Duke of Alburquerque( in full)( Cuéllar, 1575 – Madrid, 18 July 1637) was a Spanish nobleman, military and politician.He was the son of Don Beltrán III de la Cueva y Castilla, 6th Duke of Alburquerque and Isabel de la Cueva y Córdoba.In 1617, he was appointed Viceroy of Catalonia, a function in which he became known as" one of the toughest, most rigorous, and successful of the viceroys of Catalonia ... and had specialized in the suppression of disorder."To suppress" banditism", he did n't hesitate to clash with the local authority, the Principality of Catalonia, and to restrict the Catalan constitution.Between 1627 and 1632, he was Viceroy of Sicily, where he had 2 bronze statues erected of Kings Charles I and Philip IV.He was also a member of the Spanish Council of State and the War Council under King Philip IV.He served as Ambassador to the Holy See and finally was President of the Council of Italy and Council of Aragon.
Knowledge 1: Beltrán de la Cueva, 3rd Duke of Alburquerque
Beltrán de la Cueva y Toledo, 3rd Duke of Alburquerque, (in full), (c. 1478 - 11 February 1560) was a Spanish nobleman and military leader.He was born in Cuéllar, the son of Don Francisco Fernández de la Cueva, 2nd Duke of Alburquerque and of Francisca de Toledo, daughter of García Álvarez de Toledo, 1st Duke of Alba.Beltrán de la Cueva was appointed captain general of the Spanish Army, and commander-in-chief of the English Army in France (under queen Mary I of England).He was named a Knight of the Order of the Golden Fleece in 1531, a Viceroy of Aragon in 1535, and a Viceroy of Navarre in 1552, position he held until his death in 1560. [SEP] Knowledge 2: Beatrice, Countess of Alburquerque
Beatrice of Portugal was Countess of Alburquerque as the wife of Sancho Alfonso of Alburquerque.She was the daughter of Peter I of Portugal and his wife Inês de Castro.

Answer: Beltrán de la Cueva, 1st Duke of Alburquerque