Pedro de Alcántara Téllez-Girón, 11th Duke of Osuna

Pedro de Alcántara Téllez-Girón y Beaufort Spontin, 11th Duke of Osuna, GE (10 September 1810 – 29 September 1844), was a Spanish peer, head of the House of Osuna. He was one of the most important peers of his time, and was thirteen times a duke, twelve a marquess, thirteen a count and once a viscount.

Family origins
Pedro was the son of Francisco Téllez-Girón, 10th Duke de Osuna and of María Francisca Beaufort Spontin y Álvarez de Toledo, 11th Marchioness of Almenara. The Téllez-Girón family had held title over the Dukedom of Osuna since 1562 with the rise of Pedro Téllez-Girón.

Biography
Pedro inherited the Dukedom of Osuna after the death of his father in 1820.

He died in 1844 without leaving behind any heirs. As a result, all of his titles, including the Dukedoms of the Infantado and of Osuna would pass on to his brother, Mariano Téllez-Girón.

Dukedoms

 * XI Duke of Osuna
 * X Duke of Pastrana
 * XIV Duke of Béjar
 * XIII Duke of Arcos
 * XIV Duke of Benavente
 * XIV Duke of the Infantado
 * XV Duke of Plasencia
 * XV Duke of Gandía
 * X Duke of Mandas y Villanueva
 * XIV Duke of Medina de Rioseco
 * XI Duke of Lerma
 * Duke of Estremera
 * Duke of Francavilla

Marquessates

 * XIII Marquess of Peñafiel,
 * XV Marquess of Santillana,
 * XVI Marquess of Tavara,
 * Marquess of Terranova,
 * Marquess of Cea,
 * Marquess of Gibraleón,
 * Marquess of Lombay,
 * Marquess of Zahara,
 * Marquess of Cenete,
 * Marquess of Angüeso,
 * Marquess of Almenara,
 * Marquess of Algecilla.

Countships

 * XVI Count of Benavente,
 * VII Count of Fontanar,
 * XV Count of Ureña,
 * Count of Mayorga,
 * Count of Bañares,
 * Count of Oliva,
 * Count of Mayalde,
 * Count of Belalcázar,
 * Count of Real de Manzanares,
 * Count of Saldaña,
 * Count of the Cid,
 * Count of Melgar de la Frontera,
 * Count of Bailén,
 * Count of Villada.