(c. 1620-1660), second son of the 7th duke. Manuel Diego de Zúñiga, 10th Duke of Béjar and Plasencia (1657-1668), eldest son of the 9th duke. Juan Manuel de Zúñiga, 11th Duke of Béjar and Plasencia (1680-1747), eldest son of the 10th duke. Joaquín de Zúñiga, 12th Duke of Béjar and Plasencia (1715-1771), eldest son of the 11th duke. María Josefa Pimentel, 12th Countess Duchess of Benavente and 13th Duchess of Bejar and Plasencia (1750-1834), great-granddaughter of the 10th duke's only sister. Pedro de Alcántara Téllez-Girón, 11th Duke of Osuna and 14th Duke of Bejar and Plasencia (1810-1844), eldest son of the 13th duchess' eldest surviving son. Mariano Téllez-Girón, 12th Duke of Osuna and 15th Duke of Bejar and Plasencia (1814-1882), second son of the 13th duchess' eldest surviving son. María del Pilar Gayoso de los Cobos, 16th Duchess of Plasencia (1856-1939), granddaughter of the 13th duchess' seventh daughter. Ignacio Fernández de Henestrosa, 17th Duke of Plasencia (1880-1948), elder son of the 16th duchess' eldest sister. José María Martorell, 18th Duke of Plasencia (1903-1960), great-grandson of the 14th duke's second brother. Ángela María Téllez-Girón, 16th Duchess of Osuna and 19th Duchess of Plasencia (1925-2015), great-granddaughter of the 14th duke's second brother. María de Gracia de Solís-Beaumont, 20th Duchess of Plasencia (1957-2021), second daughter of the 19th duchess. The heiress apparent is María de Gracia Giacinta Ruspoli y Solís-Beaumont, 16th Marchioness of the Villar de Grajanejos (b. 1977). Family tree Notes References Elenco de Grandezas y Títulos Nobiliarios Españoles, Hidalguía Editions, 2008 Dukedoms of Spain Plasencia