Sebastián de la Cuadra, 1st Marquess of Villarías
Spanish politician (1687-1766)
Sebastián de la Cuadra y Llarena, 1st Marquess of Villarías (19 January 1687 – 23 April 1766) was a Spanish statesman. He served as Chief Minister (First Secretary of State) between 1736 and 1746 during the reign of Philip V of Spain. The Marquess of Villarías, of the Council of State, Knight of the Order of Santiago, served as a steward of the Royal Chapel of San Genaro.
Early life
Simón de la Cuadra y Llarena was born into a prominent Basque noble family in San Julián de Muskiz, within the historic region of Las Encartaciones, Biscay. He was the son of Simón de la Cuadra Medrano, a powerful rural aristocrat and ironmaster who served as Mayor of the Valley of Somorrostro in 1693, 1697, and 1699. He belonged to the influential Cuadra, Salazar, and Medrano family branch.
In 1705, his father established a mayorazgo (entailed estate), linking to it the Casa Torre de la Puente de Muskiz, two farmsteads, two mills, and the principal iron forges of Villochi and El Pobal, along with extensive forests—demonstrating the family’s wealth and industrial influence in the ironworking economy of northern Spain.
His mother, María de Llarena y Sobrado, also came from the local landed nobility. Simón belonged to a large family with eleven siblings, including Agustín de la Cuadra y Llarena, who began his political career as Mayor of the Valley of Somorrostro, and later rose to serve as General Trustee (Síndico Procurador General) of Las Encartaciones (Enkarterri) in 1705, representing the entire autonomous region before the Lordship of Biscay and the Crown. Augustín succeeded his brother as 2nd Marquess of Villarías.
This brief starts where responsible research should: with the source description of “Sebastián de la Cuadra, 1st Marquess of Villarías” as spanish politician (1687-1766). Everything that follows is an evidence route, not borrowed authority.
Why this record matters
The subject matters to the people & ideas register because the source frames it as spanish politician (1687-1766). Its deeper value depends on whether names, dates, institutions and citations support that framing.
Biographical claims are most persuasive when dates, appointments and relationships can be traced to records created close to the events described. The source revision retrieved here is dated Sep 4, 2026. The linked authority identifier is Q3130422. VIAF identifies the subject as 38827541. The Library of Congress control number is n2007051538. 3 of 3 selected statements include explicit references; 0 carry qualifiers and 0 use preferred rank. The first chronological checks are 1687, 1766, 1736 and 1746.
Later biographies can compress uncertainty and repeat inherited reputations, so apparently settled claims may still require comparison. The lead is largely declarative, so disagreement and counter-evidence require a deliberate search beyond the opening account. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.
How to read it
Read biographical claims against dates, named institutions and the cited references. Distinguish a subject’s later reputation from evidence produced during their lifetime.
- Establishing names and roles
- Building a first chronology
- Locating cited institutions
Personal papers, civil or court records, institutional files and the scholarship cited by the source.
Three-step research path
- Establish the record: confirm the title “Sebastián de la Cuadra, 1st Marquess of Villarías”, its source revision and the description used here.
- Expand the search: follow Sebastián de la Cuadra, 1st Marquess of Villarías primary sources, Sebastián de la Cuadra, 1st Marquess of Villarías archive and Sebastián research across catalogues and specialist indexes.
- Test the account: compare the strongest cited source with the responsible institution’s current record and note any disagreement.
Questions for further research
- Which source most directly establishes the central claim about “Sebastián de la Cuadra, 1st Marquess of Villarías”?
- Which primary records establish identity, chronology and institutional ties?
- How has the subject’s reputation changed across later accounts?
Search terms from this dossier
This entry incorporates text from “Sebastián de la Cuadra, 1st Marquess of Villarías” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.