The House of Quiñones (Casa de Quiñones) is an old and noble Spanish family that emerged in Castile and León in the 12th century and became one of the most prominent dynasties of the Spanish kingdom until the 20th century. The original family gave rise to several branches, one of which became Conts of Luna from the 15th century to the 19th century, in turn giving rise to other branches including the marquesado de Alcedo.

The House of Quiñones is a Spanish noble lineage originating from Quiñones del Río, in the Kingdom of León. Its members have played a prominent role in the history of the Spanish nobility, holding numerous noble titles over the centuries. The family has retained possession of most of these titles, consolidating its relevance within the Hispanic nobility. Among the most important titles are the Merino Mayor of Asturias, the County of Luna, the County of Bañuelos, the Duchy of Sasso, the Marquessate of Lorenzana, the Marquessate of Alcedo, the Marquessate of San Carlos, the Marquessate of Montevirgen, as well as the Lordships of Riazo and Coladilla.

The founder of what became the House of Quiñones was an Asturian nobleman named Pedro Alvarez Quiñones, who is first seen in the mid 12th-century as tenente (Lord) of Luna and lord of the village of Quiñones del río in León. The family would come to be known by a toponymic surname indicating their derivation from the latter village.

One of these traced said this man married with Violante Ponce de León, family of Kings of León with one daughter of a King Alfonso IX of León. A son named Suero and trunk of the lineage fought in the war of succession of the house of burgundy. His was son Pedro S. Quiñones de Mendoza, he was general of the border and he married Juana G. Bazan but when he had no succession, his sister Leonor inherited him, who will be the third lady of Luna's house.

The Quiñones lineage continued through the Middle Ages in the reconquest of the southern peninsula against the Arabs and established itself as a first-rank noble house, fighting in the internal struggles of the House of Trastamara, playing a leading role in politics Castilian since they belonged to the royal lineage.

Several current Spanish noble families derive from the House of Quiñones: the House of Count of Luna, as direct heirs of Violante Ponce de León, and its small count of Bañuelos. From the House of Luna (Counts since 1462) come the lesser noble houses of the Marquesados de Alcedo (since 1891) San Carlos o Montevirgen (created in 1796 for Charles VII of Napoles) from which There were and there are many gentlemen in Europe.

In the House of Count of Luna, the marriage bonds- since its foundation has always been with families of equal or higher rank, noble descent and economy. Antonia María Quiñones de León y Bañuelos Antonia María Quiñones de León y Bañuelos (Biarritz, February 22, 1895 - Santiago, Chile, March 10, 1982), the IV Marchioness of San Carlos, was a prominent figure in the Hispano-Chilean nobility and maintained diplomatic and institutional relations between Spain and Chile.

She married Luis Maximiliano Cousiño y Sébire (Paris, September 9, 1895 - Santiago, Chile, August 10, 1970), a member of the Cousiño family, known for their role in the mining industry in Chile. He was the son of Luis Alberto Cousiño y Goyenechea and Isidora Goyenechea Gallo. They had five sons and two daughters:

Matías Cousiño y Quiñones de León (Santiago, Chile, January 20, 1923 - Santiago, Chile, March 4, 1995).

Antonio Cousiño y Quiñones de León (Santiago, Chile, April 15, 1925 - Santiago, Chile, October 12, 1983).

Alberto Cousiño y Quiñones de León (Quintero, August 14, 1926 - Buenos Aires, February 27, 1967). He married Edith Espinoza Brando (Santiago, Chile, November 17, 1931), and they had five children:

• José Luis Cousiño Espinoza (Santiago, Chile, January 14, 1956).
• Pablo Cousiño Espinoza (Biarritz, February 11, 1958).
• Antonia Cousiño Espinoza (Santiago, Chile, March 29, 1960).
• Luz María Cousiño Espinoza (Santiago, Chile, April 2, 1962).
• Viviana Cousiño Espinoza.

Fernando Cousiño y Quiñones de León (Santiago, Chile, October 19, 1928 - Santiago, Chile, July 5, 2010). He was married to Blanca Aida Rodríguez Zúñiga (who passed away on May 19, 2012) and later to Lidia Valderrama. They had four children:

• Mónica Cousiño Rodríguez (Santiago, Chile, August 28, 1961).
• Eduardo Cousiño Rodríguez (Santiago, Chile, September 30, 1962), who married Marcela Cossette Soulodre Tudela, and they are the parents of Matías Cousiño Soulodre and Daniela Cousiño Soulodre.
• Juan Agustín Cousiño Rodríguez (Santiago, Chile, December 17, 1963).
• María Lidia Cousiño Valderrama.

Maribel Cousiño y Quiñones de León (Paris, March 12, 1931 - Santiago, Chile, May 10, 2007) was a socialite in Chile, married to Francisco Javier Donoso Phillips, a businessman and Polo player:

• Antonia Donoso Cousiño.
• Beatriz Donoso Cousiño.
• Francisca Donoso Cousiño.
• Isabel Donoso Cousiño.
• Pablo Donoso Cousiño (Santiago, Chile, June 29, 1964).
• José Javier Donoso Cousiño (Santiago, Chile, March 19, 1968).
• Felipe Andrés Rioseco Donoso (born April 5, 1991, in Créteil), current Marquis of Rioseco, V Marquis of San Carlos, Marquis of Montevirgen, and Duke of Sasso since 2022.

Juan Luis Cousiño y Quiñones de León (Zapallar, March 1, 1933). He married Anne Tripier y de Prat (Biarritz, January 28, 1938), and they had five children:

• Vincent Cousiño Tripier (Juvisy, April 7, 1962).
• Christina Cousiño Tripier (Juvisy, August 24, 1963).
• María de las Nieves Cousiño Tripier (Viry-Châtillon, September 28, 1964).
• François Xavier Cousiño Tripier (Corbeil, March 4, 1967).
• Ygaël Cousiño Tripier (Villecresnes, July 13, 1969), who married Sylvie Bouchet (Paris, April 19, 1969), and they are the parents of Théodore "Théo" Cousiño Bouchet (Quincy, August 19, 1998), Yanis Cousiño Bouchet (Créteil, March 1, 2001), and Raphaël Cousiño Bouchet (Quincy, June 10, 2006).

Micaela Ana María Cousiño y Quiñones de León (Vichy, April 30, 1938 - Paris, March 13, 2022). She is the grandmother of:

• Felipe Andrés Rioseco Donoso (born in Créteil, April 5, 1991), Grandee of Spain, current Marquis of Rioseco, V Marquis of San Carlos, Marquis of Montevirgen, and Duke of Sasso since 2022.

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