Duarte Fernando Álvarez de Toledo

Duarte Fernando Álvarez de Toledo Portugal (c. 1620 – 25 June 1671) was a Spanish nobleman, soldier, and statesman, Grandee of Spain, 7th Count of Oropesa, 6th Count of Deleytosa, 3rd Marquis of Frechilla and Villarramiel, 3rd Marquis of Jarandilla, knight of the Order of Alcántara, who served as Viceroy of Navarre (1643–1645), of Valencia (1645–1650), of Sardinia, President of the Council of the Military Orders (1663–1669) and of the Council of Italy (1669–1671) and Spanish Ambassador to the Holy See.

Biography He was the second son of Fernando Álvarez de Toledo Portugal, V Count of Oropesa, and Mencía Pimentel Zúñiga, daughter of Juan Alonso Pimentel de Herrera, V Duke of Benavente. He succeeded his elder brother, Juan Álvarez de Toledo Portugal, VI Count of Oropesa, who died as a child in 1621.