Gaspar Téllez-Girón, 5th Duke de Osuna

He was the grandson of Pedro Téllez-Girón, 3rd Duke of Osuna, Viceroy of Sicily, Viceroy of Naples, and the son of Juan Tellez-Girón y Enriquez de Ribera, 4th Duke of Osuna, Viceroy of Sicily.

In his first marriage in 1645 he married a cousin, named as her mother Felice, Feliche de Sandoval Rojas y Enriquez de Cabrera, deceased in Milan, Italy on 7 October 1671, who hold her own inherited title of 4th Duchess of Uceda and was therefore, also a Grandee of Spain on her own rights, daughter of Francisco de Sandoval Rojas, 2nd Duke of Lerma and 2nd Duke of Uceda, Duke of Cea. Her mother was a member of the powerful and old Colonna family. The children who survived, (5 out of 7), were all females who married within the pinnacle of the highest Spanish Nobility of the time.

He married again in 1672, aged 47, 19 years old Ana Antonia Francisca, (Milán, 14 April 1653 - Madrid, 4 December 1707, aged 50), 4th Marchioness of Caracena, a daughter of Luis de Benavides Carrillo, Marquis of Caracena, 6th marquis of Frómista, Governor of the Duchy of Milan, Governor of the Habsburg Netherlands. Her mother was Catalina Ponce de León, third daughter of Rodrigo Ponce de León, 4th Duke of Arcos and of María Francica Córdoba de Aragón, a daughter of the 5th Dukes of Segorbe.

Ana Antonia Francisca, would be the inheritor of the nobility titles of her parents, presumably by the non existence of/or earlier death of her legitimate male brothers. She held also the title of Marshal of Castile by herself.

From this second wife (4 children:2 males + 2 females), came the two next successors to the Duchy,

• Francisco Téllez-Girón, 6th Duke of Osuna, a.k.a. Francisco María de Paula Téllez-Girón y Benavides, (* Madrid, Spain, 11 August 1678 - Ambassador and Plenipotentiary minister for the Treaty of Utrecht, (1713) - París, France, 13 April 1716). Married in 1695 he got two daughters only who did not inherited the title passing it to the surviving brother:
• José María Téllez-Girón, 7th Duke of Osuna, a.k.a. José María Téllez-Girón y Benavides, (* Madrid, Spain, 25 May 1685 - Duke successor to his brother 1716 - + Madrid 8 March 1733). He married in 1721, Andalusian wealthy girl Francisca Bibiana, 6th daughter of the very rich and powerful 12th Duke of Medina Sidonia, 17th Count of Niebla, 11th Marquess of Cazaza, a Grandee of Spain, a Knight of the Order of the Golden Fleece. Her mother, Luisa María Bernarda, was the third daughter of the financier and nobleman 5th Duke of Pastrana, of the "De Silva Mendoza" family. With Issue.

• LINDE, Luis M. Don Pedro Girón, Duque de Osuna, la hegemonía española en Europa a comienzos del siglo XVII, Ed. Encuentro, Madrid, 2005. ISBN 84-7490-762-4. A study, mainly on finances and economy in European trade at the beginnings of the 17th century, through discussing the figure of Pedro Téllez-Girón y Velasco, 3rd Duke of Osuna, (1574–1624) .